DSE-PHY-MK2-121 HKDSE Physics Mock Paper Series – Set 2 Force and Motion – Paper 1 Set 2 2012 HKDSE Physics Mock Exam Paper Paper 1: Multiple Choices questions Total: 40 Marks Time Limit: 1 hour Part IV: IV: Force and Motion (100%): 1. 2. 3. 4. 5. 6. 7. Position and movement (15%) Force and motion (20%) Projectile motion (10%) Work, energy and power (20%) Momentum (15%) Uniform Uniform circular motion (10%) Gravitation (10%) 特別為應考 2012 年首屆中學文憑試的同學編寫的模擬試題系列. 年首屆中學文憑試的同學編寫的模擬試題系列 深淺程度參考過往會考和高考熱門試題, 深淺程度參考過往會考和高考熱門試題 再加上可能出現的新題種. 再加上可能出現的新題種 每條試題結尾均標註了相關課程章節, 每條試題結尾均標註了相關課程章節 提醒同學”唔會讀漏書 提醒同學 唔會讀漏書". 唔會讀漏書 概念(Qualitative)與計量 與計量(Qualitative)並重 並重, 轉多幾過彎". 概念 與計量 並重 讓同學深入思考, 同學深入思考 "轉多幾過彎 轉多幾過彎 特別設計"分課 特別設計 分課題 模擬試題, 同學可以按課 熟識程度練習 分課題 (By Topics) "模擬試題 模擬試題 讓同學可以按 可以按課題 熟識程度練習. 同學完成這一系列 同學完成這一系列模擬試題 完成這一系列模擬試題後 模擬試題 後, 希望能幫助提升 希望能幫助提升應考 提升 應考中學文憑試 應考中學文憑試的信心 中學文憑試的信心. 的信心 Enrollment Hotline: 6772 3001 Website: www.andylai.hk MSN: mrandylai@hotmail.com Address: Rm706, Prosper Commercial Building, 9 Yin Chong Street, Mong Kok, Kowloon, Hong Kong. 2012 HKDSE Physics Paper I – Set 2 Suggested Answers 1. C 2. B 3. C 4. B 5. A 6. C 7. D 8. B 9. A 10. B 11. A 12. B 13. D 14. D 15. B 16. B 17. D 18. A 19. C 20. A 21. D 22. A 23. B 24. D 25. C 26. B 27. A 28. C 29. B 30. D 31. A 32. D 33. D 34. B 35. A 36. D 37. C 38. B 39. B 40. C * Super Challenge answer: Question no. 24: Away point P. Physics is easy! No pains! No gains! 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 Part I: Multiple choices Questions: 1. Andy is taking the lift downward with uniform deceleration, the reading of the scale is 100N (Figure 1). Suddenly, the string of the lift is broken, Andy, the scale and the lift is under free fall motion (Figure 2). Fortunately, the lift is designed by Andy and there is a parachute system installed. After the parachute reaching the steady state, the lift is falling down with safe uniform speed at about 1 m s-1 . Which of the following is the possible reading of the scale in figure 2 and figure 3 respectively? No problem! I have parachute! Ha ha! Figure 1. A. After string After opening breaks parachute reaching ⇒ steady state ⇒ Figure 2 Figure 2. 120 N Figure 3 Figure 3. 100N B. C. 0N 0N 120N 80N D. 100 N 100N (Reference: HKDSE Physics syllabus part II a. vertical motion under gravity point 4) 2. The following figure shows the positions of a ball when t = 0s, 2s, 4s and 6s respectively. What is the average acceleration of the ball of the whole journey? A. 0.375 m s-2 B. 0.75 m s -2 C. 1 m s -2 D. 2 m s -2 (Reference: HKDSE Physics syllabus part II a. equations of uniformly accelerated motion point 2) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 1 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 3. Which of the following statement is always true? A. Displacement travelled by a particle is always greater than the distance travelled by a particle. B. If a particle is at rest now, its acceleration must be zero at that moment. C. The magnitude of Andy’s weight on the Earth is always equal to the magnitude of the force acting on the Earth by him. D. If the body is increasing its speed on a rough surface, the friction acting on the body is always increasing accordingly. (Reference: HKDSE Physics syllabus part II a. Position, distance and displacement point 1 2 b. Newton’s first law of motion point 2 and 3 Newton’s second law of motion point 2 Mass and weight point 2) 4. Which of the descriptions about the motion of a car in the graph is correct? (Hints: BC is a straight line.) A. Before point A, the car accelerates uniformly and attains maximum speed at A. B. From point B to point C, the car moves with uniform velocity. C. At point C, the car changes it direction. D. At point D, the car is moving with maximum speed. (Reference: HKDSE Physics syllabus part II a. speed and velocity point 5 uniform motion point 1) P. 2 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 5. Andy is driving his car on a circular track of radius a, as shown in the figure below. When his car has traveled clockwise from P to W, what is the displacement from P to Q? A. a 2 southwest. B. a 2 northeast. 3πa C. southwest. 2 D. 3πa northeast. 2 (Reference: HKDSE Physics syllabus part II a. position, distance and displacement point 1 scalars and vectors point 1 2) 6. Two small ball A and B of masses 1 kg and 2 kg respectively are released from rest at heights 2h and h above the ground respectively. Which of the following statements is/are correct ? (Assume air resistance is negligible) (1) The acceleration of ball A doubles that of ball B. (2) The distance between ball A and ball B will be the same as they are falling down before reaching the ground. (3) The kinetic energy of ball A when reaching the ground is the same of that of ball B. A. (1) only B. (3) only C. (2) and (3) only D. None of the above (Reference: HKDSE Physics syllabus part II a. equations of uniform accelerated motion point 2 b. Newton’s second law of motion point 2 d. Law of conversation of energy in a closed system point 1 2 3) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 3 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 7. In the figure below, A cart is pulled along a horizontal rough surface by a rope that passes over a fixed smooth pulley. A electronic scale is placed on the road. As the cart is moving to the right, which of the following description about its acceleration and reading of the scale is correct? (Assume the tension in the string and the friction acting on the cart remains unchanged during its motion.) A. Acceleration Increasing Reading of the scale Increasing B. C. Increasing Decreasing Decreasing Increasing D. Decreasing Decreasing (Reference: HKDSE Physics syllabus part II b. Newton’s second law of motion point 2 3 4 5) 8. In the figure below, an oil tanker is accelerating uniformly. However, its oil tank is broken with a big hole and the oil is leaking into the sea. Which of the following descriptions about the oil tanker must be correct? A. The normal reaction acting on the tanker remains unchanged. B. The rate of change of momentum of the tanker is decreasing. C. The air friction acting on the tanker is constant. D. The net force acting on the tanker is increasing. (Reference: HKDSE Physics syllabus part II b. Newton’s second law of motion 2 3 4 5 e. Change in momentum and net force point 2) P. 4 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 9. A horizontal force 10 Newton is applied to a car on a rough horizontal surface. The acceleration of the block is 2 m s -2 . If the force is changed to 20 N and the frictional force remains unchanged, then the acceleration of the block will be A. greater than 4 m s -2 B. equal to 4 m s -2 C. between 2 m s -2 and 4 m s -2 D. equal to 2 m s -2 (Reference: HKDSE Physics syllabus part II b. Newton’s second law of motion point 2 3 4 5 6) 10. A force F is applied to block A and pushing it to the right on a smooth surface. The masses of A, B and C are 1 kg, 2 kg and 3 kg respectively. What is the force acting on B by C in terms of F? A. F / 3 B. F / 2 C. F D. 2F (Reference: HKDSE Physics syllabus part II b. Newton’s second law of motion point 2 3 4 5 6) 11. An object of mass 5 kg is placed on a smooth plane with an inclination of 30 degree to the horizontal. An object of mass 3 kg is connected by a light string passing over a frictionless pulley, as shown below. When is the tension in the string? A. 27.6 N B. 28.4 N C. 29.2 N D. 30.0 N (Reference: HKDSE Physics syllabus part II b. Newton’s second law of motion point 2 3 4 5 6) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 5 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 12. Consider Andy is taking a lift accelerating upwards from the ground floor to the 7 th floor. He is standing on a scale weighing his weight. What of the following graph BEST describes the change in reading of the scale during the upward motion of the lift? Assuming his weight is equal to W and the reading of the scale is R. A. B. C. D. (Reference: HKDSE Physics syllabus part II b. Newton’s third law of motion point 1 2) 13. Each uniform-brick as shown in the figure is of length L. How would you stack 3 blocks so the top brick has the maximum horizontal overhang (x) above the bottom brick? A. 1 L 3 B. 2 L 3 C. 1 L 2 D. 3 L 4 (Reference: HKDSE Physics syllabus part II b. Moment of a force point 1 2 3) P. 6 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 14. A racing car is designed that no side way toppling happen if the angle of inclination is less than or equal to 30 degrees to the horizontal. If the center of gravity of the racing car is 1.8 meters above the ground, what is the minimum separation x between its two wheels? A. 1 m B. 1.5 m C. 1.8 m D. 2.1 m (Reference: HKDSE Physics syllabus part II b. Moment of a force point 1 2 3 4) 15. A trained dolphin leaps from the water with an initial speed of 12.0 ms −1 . t jumps directly toward a ball held by the trainer a horizontal distance of 5.50 m away and a vertical distance of 4.10 m above the water. In the absence of gravity, the dolphin would move in a straight line to the ball and catch it, but because of gravity the dolphin follows a parabolic path well below the ball’s initial position, as shown. Once the trainer releases the ball, the dolphin leaves the water. Calculate the time that the dolphin and the falling ball meet. A. 0.47 s B. 0.57 s C. 0.67 s D. 0.77 s (Reference: HKDSE Physics syllabus part II c. projectile motion point 2 3) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 7 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 16. In projectile motion, the motion in horizontal direction and vertical direction is independent because A. the acceleration due to gravity affects both horizontal direction and vertical direction. B. the weight cannot be resolved a component of force which is perpendicular to the direction of the weight. C. the motion of the horizontal direction is in uniform motion. D. We assume there is no air resistance for both horizontal direction and vertical direction. (Reference: HKDSE Physics syllabus part II c. projectile motion point 2) 17. A stone is projected at an angle of 60 degree to the horizontal with an initial kinetic energy E. Neglecting air resistance, find the kinetic energy of the stone when it is halfway down. A. E/4 B. E/2 C. 3E/4 D. 5E/8 (Reference: HKDSE Physics syllabus part II c. projectile motion point 1 2 3 e. Law of conversation of energy in a closed system point 1 2 3) 18. Andy is pointing at a point A with his “AK-47” toy gun at an angle of inclination θ . The distance between point A and the toy gun is 30 m. If the speed of the bullet is 50 m/s when it was shot from the gun, calculate the separation between the bullet and point A when the bullet is vertically below A. Assume there is air resistance. A. 1.8 m B. 3.2 m C. 4.8 m D. It cannot be found since the value of θ is not given. (Reference: HKDSE Physics syllabus part II c. projectile motion point 2 3) P. 8 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 19. A particle of mass m is suspended from a fixed point O by a light, inextensible cord. The particle is moving from P to Q by a motor with uniform speed. It moves in an arc of a circle as shown in the figure below. Which of the following statement is correct? (Assume there is no air resistance acting on the particle during the motion.) A. The particle moves with constant velocity from P to Q. B. All the loss in potential energy of the particle from P to Q is converted to the kinetic energy of the particle at Q. C. There is work done against friction between the parts inside the motor. D. Total mechanical energy of the particle is conserved when it move from P to Q. (Reference: HKDSE Physics syllabus part II d. Law of conservation of energy point 1 2 3) 20. The graph below shows the variation of the force F with the displacement x of a particle. What is the total work done by the force F when the particle moves from x = 5m to x = 15m and then back to x = 10m ? A. 62.5 J B. 87.5 J C. 150 J D. 237.5 J (Reference: HKDSE Physics syllabus part II d. mechanical work point 2) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 9 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 21. A uniform meter rope with mass 5 kg is held at rest with 75 cm lying on a smooth horizontal table surface and the rest 25 cm hanging freely over the edge. What is the minimum energy needed to pull the rope on the table surface? A. 12.3 J B. 6.1 J C. 3.1 J D. 1.5 J (Reference: HKDSE Physics syllabus part II b. moment of a force point 4 d. gravitational potential energy (P.E.) point 1 2 3) 22. A stone is projected vertically upwards. Neglecting air resistance, which of the following shows the variation of the kinetic energy of the stone with the time during its upward motion? A. C. . B. . D. . . (Reference: HKDSE Physics syllabus part II d. Kinetic energy point 2 3) P. 10 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 23. A simple pendulum bob with mass 1 kg is released from rest from a point P, which is 0.8 m above its lowest Q, as shown in the diagram below. Neglecting air resistance, which of the following statement is / are correct? (1) The work done by the tension in the string when the bob moves from point P to point Q is equal to 7.84 J (2) The loss of potential energy of the bob is equal to the gain in kinetic energy of the bob when it moves from point P to point Q. (3) The acceleration of the bob will points towards O. A. (1) only B. (2) only C. (1) and (2) only D. (2) and (3) only (Reference: HKDSE Physics syllabus part II d. law of conversation of energy point 2 3 f. uniform circular motion point 4 5) 24. A force F is applied to push a block of mass 5 kg upward along a inclined plane with angle of inclination 30 degrees. The greatest value of F to make the block remain at rest is 31 N. What is the minimum work done needed to move the block up vertically by 2 meter? A. 62 J B. 98 J C. 100 J D. 124 J (Reference: HKDSE Physics syllabus part II d. Law of conversation of energy in a closed system point 3) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 11 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 25. After the rocket fuel is used up, the rocket stopped moving. After a while, a small explosion is used to separate a space capsule of mass mc from its rocket of mass mr where mc < mr . Which of the following statements is / are correct? (1) After explosion, the magnitude of the momentum of the capsule is larger than that of the rocket. (2) The total kinetic energy of the capsule and the rocket is conserved before and after the explosion. (3) The kinetic energy of the capsule is larger than that of the rocket after explosion. A. (1) and (2) only B. (2) and (3) only C. (3) only D. None of the above (Reference: HKDSE Physics syllabus part II e. law of conversation of momentum point 2 3) 26. A sphere of mass m strikes a vertical wall and bounces off it, as shown below. wall momentum pB momentum pA The magnitude of the momentum of the sphere just before impact is pB and just after impact is pA. The sphere is in contact with the wall for time t. The magnitude of the average force exerted by the wall on the sphere is A. ( pB – pA ) t . B. ( pB + pA ) t . C. ( pB – pA ) mt . D. ( pB + pA ) mt (Reference: HKDSE Physics syllabus part II e. Change in momentum and net force point 1) P. 12 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai . 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 27. A toy cannon (with ball inside) with mass 3 kg is mounted vertically on a cart with mass 3 kg. The cart is moving along a straight-line with constant speed 4 m/s. A spring inside the cannon shoots a ball with mass 1 kg vertically upwards. Assume there is no resistance force acting on the cart and the ball. Find the change in kinetic energy of the cart and cannon after the ball is shoot upwards. (answer correct to the nearest integer) A. 8 J B. 10 J C. 21 J D. 36 J (Reference: HKDSE Physics syllabus part II e. law of conservation of momentum point 2 3) 28. A particle of mass m strikes a barrier with velocity u and rebounds with velocity v. Which of the following statement is / are correct? (1) The velocity u and v must be the same. (2) The angle θ and φ must be equal. (3) The net change in momentum of the particle can be expressed as 2mvsin θ . A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) (Reference: HKDSE Physics syllabus part II e. law of conversation of momentum point 1 2 3) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 13 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 29. Two identical balls, A and B, each suspended by a light inextensible string of length l to a common point X. A is raised and then released through an angle of 60o as shown. The collision between A and B is perfectly elastic. What are the speed of A and the speed of B, just after the collision? Speed of A Speed of B A. 0 gl 2 B. 0 gl C. gl 2 gl 2 D. gl 2 0 E. gl gl (Reference: HKDSE Physics syllabus part II d. law of conversation of energy point 2 3 e. law of conversation of momentum point 1 2 3) P. 14 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 30. A particle A of mass mA collides elastically on another particle B of mass mB initially at rest. Particle A leaves at an angle α with the horizontal while B leaves at an angle β with the horizontal. If mA = mB , then (1) α + β = 90o (2) u A = v A + v B (3) uA2 = vA2 + vB2 A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) (Reference: HKDSE Physics syllabus part II e. law of conversation of momentum point 1 2 3) 31. A billiard ball is moving on a frictionless horizontal table at a speed of u. It hits another billiard ball of equal mass which is initially at rest. The directions of travel of the two balls after impact are both at an angle θ with the original direction of the ball. Given that 30% of the initial kinetic energy is lost during the impact, find the value of the angle θ. A. 32.31 o B. 53.30 o C. 45o D. 25.21 o (Reference: HKDSE Physics syllabus part II d. law of conversation of energy point 2 3 e. law of conversation of momentum point 1 2 3) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 15 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 32. When a boy jumps vertically upward, his momentum is changing before and after leaving the floor. Which of the following statement is / are incorrect? (1) This situation violates the law of conservation of momentum. (2) The change in momentum before and after leaving the floor comes from the impulse given by his weight. (3) When the boy is in the air, his momentum is constant. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) (Reference: HKDSE Physics syllabus part II e. change in momentum and net force point 1 law of conversation of momentum point 1) 33. The figure shows a small body of mass m revolving in a horizontal circle with constant speed v at the end of a string of length L. If the string makes an angle θ with the vertical, what is the period of the body? A. π L sin θ / g 2 B. π L / g cos θ C. 2π L sin θ / g D. 2π L cos θ / g (Reference: HKDSE Physics syllabus part II f. uniform circular motion point 2 3 4) P. 16 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 34. A rope is fixed at point O at one end and a ball is attached on the other end. If it is released freely at point A, the ball will swing like a pendulum from point A to point E. Which position will the net force of the ball pointing towards point O? Assume the rope is tight throughout the motion. A. A only B. E only C. A, C and D only D. A, B, C, D and E (Reference: HKDSE Physics syllabus part II f. uniform circular motion point 2 3 4) 35. The diagram represents the rear view of a lorry with mass 1000 kg moving away from an observer on a level road at constant speed around a bend of which the centre of curvature is at point P. the radius of round a bend is 50 meters. The distance between 2 wheels is 1.5 meters and the center of gravity above the ground is 3 meters. What is the maximum speed of the car without overturning? A. 11.1 m/s B. 15.7 m/s C. 22.4 m/s D. 28.7 m/s (Reference: HKDSE Physics syllabus part II f. uniform circular motion point 2 3 4) (Super challenge: Which side with the lorry bend? Away from point P or Towards point P?) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 17 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 36. A vehicle is moving along a banked circular road. The banking angle of the road is designed for vehicles moving with speed v as shown in the figure below. Which of the following statement is / are incorrect? (1) If the speed of the vehicle is slightly larger than v, there will be friction acting on the car point upwards along the banked road. (2) The vehicle cannot move with speed less than v along a banked circular road. (3) The normal reaction force acting on left wheel ( R2 ) and right wheel ( R1 ) are the same. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) only (Reference: HKDSE Physics syllabus part II f. uniform circular motion point 2 3 4) P. 18 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 37. In the figure, there are a 1-kg mass placed on the point P, point Q and point R respectively. Determine the resultant gravitational field strength at point S. A. GM a2 B. 3GM 2a 2 2 2 + 1 GM )( 2 ) 2 a 3GM D. a2 C. ( (Reference: HKDSE Physics syllabus part II g. Gravitation point 1 2 3) 38. Suppose there is two star called Andy’s star and 5** star in the universe forming a binary star system. They will revolve about center O with uniform circular motion under their mutual gravitational attraction. If the radius of orbit of Andy’s star is twice that of 5** star, which of the following statement is / are incorrect? (1) The mass of Andy’s star is two times that of 5** star. (2) The angular velocity of Andy’s star and 5** star are the same. (3) The force acting on Andy’s star is larger than the force acting on 5** star. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) (Reference: HKDSE Physics syllabus part II g. Gravitation point 1 4 5) ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 19 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 39. Consider a satellite with mass m kg moving around the Earth with tangential velocity v. As the satellite is in a circular orbit around the Earth with mass M e kg , the gravitational force (weight) acting on the satellite provides the centripetal force needed for circular motion. The radius of its orbit is rs and the radius of the Earth is Re . Which of the following statement is / are incorrect? (1) If the mass of the satellite is larger, the radius of orbit will decrease if it is moving with the same tangential velocity v. (2) If radius of the orbit increases, the velocity of the satellite will decrease. (3) If there is an astronaut working inside the satellite, he will feel weightless since there is no weight acting on him by the Earth. A. (1) and(2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) (Reference: HKDSE Physics syllabus part II g. Gravitation point 1 4 5) P. 20 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 40. There is a kind of satellite called “Parking Satellite” or “Geostationary satellite” rotating around the Earth. The “Parking Satellite” will rotate in the same sense as the Earth with same period, i.e. the period is equal to 24 hours. Which of the following statement is / are incorrect? (1) The orbit of the parking satellite must be above the equator. (2) Different parking satellites have different orbiting velocity depending its height above the ground. The higher the satellite, the faster the orbiting speed. (3) The transmitter in Hong Kong cannot make use of Parking Satellite to transmit signal because there is no parking satellite overhead Hong Kong. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3) (Reference: HKDSE Physics syllabus part II g. Gravitation point 1 4 5) The end. ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai P. 21 黎 sir 教室 2012 HKDSE Physics Mock Exam Set 2– Paper 1 DSE-PHY-MK2-121 黎 sir 教室將陸續推出下列 教室將陸續推出下列新高中 將陸續推出下列新高中 中學文憑試模擬試題系列, 中學文憑試模擬試題系列 包括: 包括 2012 HKDSE Physics Mock Exam Set 1 – Paper 1 (Heat and Gases) 2012 HKDSE Physics Mock Exam Set 1 – Paper 2 (Heat and Gases) 2012 HKDSE Physics Mock Exam Set 2 – Paper 1 (Force and Motion) 2012 HKDSE Physics Mock Exam Set 2 – Paper 2 (Force and Motion) 2012 HKDSE Physics Mock Exam Set 3 – Paper 1 (Wave Motion) 2012 HKDSE Physics Mock Exam Set 3 – Paper 2 (Wave Motion) 2012 HKDSE Physics Mock Exam Set 4 – Paper 1 (Electricity and Magnetism) 2012 HKDSE Physics Mock Exam Set 4 – Paper 2 (Electricity and Magnetism) 2012 HKDSE Physics Mock Exam Set 5 – Paper 1 (Radioactivity and Nuclear Energy) 2012 HKDSE Physics Mock Exam Set 5 – Paper 2 (Radioactivity and Nuclear Energy) 2012 HKDSE Physics Mock Exam Set 6 – Paper 1 (Astronomy and Space Science) 2012 HKDSE Physics Mock Exam Set 7 – Paper 1 (Atomic World) 2012 HKDSE Physics Mock Exam Set 8 – Paper 1 (Energy and Use of Energy) 2012 HKDSE Physics Mock Exam Set 9 – Paper 1 (Medical Physics) 特別為應考 2012 年首屆中學文憑試的同學編寫的模擬試題系列. 年首屆中學文憑試的同學編寫的模擬試題系列 深淺程度參考過往會考和高考熱門試題 和高考熱門試題, 再加上可能出現的新題種. 深淺程度參考過往會考 和高考熱門試題 再加上可能出現的新題種 每條試題結尾均標註了相關課程章節, 提醒同學 提醒同學”唔會讀漏書 唔會讀漏書". 每條試題結尾均標註了相關課程章節 唔會讀漏書 概念(Qualitative)與計量 與計量(Qualitative)並重 並重, 轉多幾過彎". 概念 與計量 並重 讓同學深入思考, 讓同學深入思考 "轉多幾過彎 轉多幾過彎 特別設計"分課題 分課題(By Topics) "模擬試題 模擬試題, 特別設計 分課題 模擬試題 讓同學可以按課題熟識程度練習. 讓同學可以按課題熟識程度練習 同學完成這一系列模擬試題後, 同學完成這一系列模擬試題後 希望能幫助提升應考中學文憑試的信心. 希望能幫助提升應考中學文憑試的信心 Level 5**: 100% 100% (The Best of the Best!) Level 5*: Level 5: 5: 90% ↑ (Superb!) 80% ↑ (Excellent!) Level 4: 4: 70% ↑ (Quite good!) good!) Level 3: 60% ↑ (Not bad!) Level 2: 5 0% ↑ (Need improvement!) Level 1: 40% ↑ (Need revise again!) Unclassified: 40% ↓ (Zero Knowledge!) Remarks: 1. This is my opinion only, not official HKEAA standard. P. 22 ©2012 A Lai learning Center. ALL RIGHTS RESERVED. www.andylai.hk Prepared by Andy Lai 黎 sir 簡介 Andy Lai BEng CUHK, MIEEE 畢業於香港中文大學電子工程學系, 畢業於香港中文大學電子工程學系 黎 sir 教室創辦人之一 教室創辦人之一. 之一 超過 15 年教授中學文憑 / IB Diploma / GCE / HSC / SAT / AP / GCSE / IGCSE / IB MYP 課程經驗. 課程經驗 與學生面對新制度的中學文憑試 ,證明寶刀未老. 與學生面對新制度的中學文憑試, 面對新制度的中學文憑試,黎 sir 親身上陣, 親身上陣,以實力於物理科和經濟 以實力於物理科和經濟科奪取 科和經濟科奪取 5**, 證明寶刀未老. 熟悉出題趨勢, 熟悉出題趨勢 教授考試取分技巧; 教授考試取分技巧 鼓勵同學獨立思考, 鼓勵同學獨立思考 增強同學理解能力. 增強同學理解能力 善用生活化例子講解, 善用生活化例子講解 教法生動, 教法生動 增加學習趣味; 增加學習趣味 深入淺出 深入淺出, 明白學生學習上的困難和需要. 明白學生學習上的困難和需要 精心編制筆記, 精心編制筆記 適合中文和英文中學學生就讀; 適合中文和英文中學學生就讀 精心編制練習和試題, 精心編制練習和試題 協助同學盡快掌握答題技巧. 協助同學盡快掌握答題技巧 黎 sir 在中學和大學時代已是一名傑出學生, 在中學和大學時代已是一名傑出學生 曾獲取的多項學業上和運動上的獎學金及獎項. 曾獲取的多項學業上和運動上的獎學金及獎項 曾代表香港參加國際性運動比賽, 曾代表香港參加國際性運動比賽 取得優異成績, 取得優異成績 又讀得又玩得, 又讀得又玩得 絕不是死讀書的書呆子. 絕不是死讀書的書呆子 任教科目: 任教科目 所有數學科 所有數學科, 數學科 物理科, 物理科 化學科, 化學科 生物科, 生物科 經濟科, 經濟科 商業科. 商業科 黎 sir 教室學生佳績 教室學生佳績: 學生佳績 首屆香港中學文憑 級以上佳績. 首屆香港中學文憑 (HKDSE), 多位學生 多位學生取得 學生取得 5/5*/5**級 以上佳績 更有學生考獲 學生考獲 5 科 5**級 級 2 科 5*級 級 1 科 5 級優異成績, 優異成績 在全港 72620 考生中, 考生中 排名 28, 入讀港大醫學院. 入讀港大醫學院 英國高考 (GCE AS/AL), 多位學生取得 A*/A 最高級別, 最高級別 更有學生考獲 5 科 A*. 國際文憑 (IB Diploma), 多位學生取得 6 / 7 級別, 級別 更有學生取得總分 40 分以上. 分以上 英國會考 (IGCSE / GCSE), 多位學生取得 A / A*成績 成績, 。 成績 更有學生取得 8 科 A*。 加拿大大學預科 (CESI) 數學課程 MCV4U , 取得 98 / 100, 99 / 100 成績。 成績。 學生成功拔尖 (EAS), 提早入讀港大理 提早入讀港大理學院和中大法律學院. 學院和中大法律學院 香港中學會考 (HKCEE), 多位學生 多位學生取得 學生取得 20 分以上佳績. 分以上佳績 保加利亞國際數學競賽 (BIMC 2013) 隊際賽金牌 隊際賽金牌. 金牌. 奧數華夏杯/ 奧數華夏杯/港澳杯/ 港澳杯/華杯, 華杯, 多位學生取得 學生取得特等獎 取得特等獎/ 特等獎/金獎/ 金獎/一等獎/全港第二名 一等獎 全港第二名. 全港第二名 還有更多, 還有更多 怒不能盡錄, 不能盡錄 詳情請瀏覽以下網址: 詳情請瀏覽以下網址 www.andylai.hk/result.htm 黎 sir 教室課程特色 教室課程特色: 課程特色 小組教學 (1 – 6 人), 導師親身教學 導師親身教學; 教學 照顧每位學生需要, 照顧每位學生需要 事半功倍. 事半功倍 精心編制筆記, 精心編制筆記 練習以近 30 年本地和外國公開試題為藍本. 年本地和外國公開試題為藍本 概念理解, 概念理解 取分技巧並重; 取分技巧並重 協助同學盡快掌握答題技巧. 協助同學盡快掌握答題技巧 歡迎自由組合小組上課, 歡迎自由組合小組上課 時間及課程內容編排更有彈性. 時間及課程內容編排更有彈性 詳情請瀏覽以下網址: 詳情請瀏覽以下網址 www.andylai.hk 黎 sir 教室 A Lai Learning Center HKDSE / IB Diploma / GCE AS AL / AP / SAT / HSC IGCSE / GCSE / IB MYP / KS3 / MO / F.1 – F.6 / Y9 – Y13 資深中學補習導師 小組補習 事半功倍!!! 事半功倍 黎 sir 簡介 Andy Lai BEng CUHK, MIEEE 畢業於香港中文大學, 畢業於香港中文大學, 黎 sir 教室創辦人之一 教室創辦人之一. 之一. 超過 15 年教授 中學文憑 / IB Diploma / GCE / HSC / SAT / AP / GCSE / IGCSE / IB MYP 課程經驗. 課程經驗. 與學生面對新制度的中學文憑試, ,證明寶刀未老. 與學生面對新制度的中學文憑試,黎 sir 親身上陣, 親身上陣,以實力於物理科和經濟 以實力於物理科和經濟科奪取 科和經濟科奪取 5**, 證明寶刀未老. 現於黎 sir 教室任教補習班, 教室任教補習班, 學生就讀於英文中學 學生就讀於英文中學, 就讀於英文中學, 中文中學, 中文中學, 國際學校及英國留學生. 國際學校及英國留學生. 熟悉近年出題趨勢 熟悉近年出題趨勢, 趨勢, 教授考試取分技巧; 教授考試取分技巧; 鼓勵同學獨立思考, 鼓勵同學獨立思考, 增強同學理解能力 善用生活化例子講解, 善用生活化例子講解, 教法生動, 教法生動, 增加學習趣味; 增加學習趣味; 深入淺出, 深入淺出, 明白學生學習上的困難和需要. 明白學生學習上的困難和需要. 中英對照筆記, 中英對照筆記,適合中文和英文中學學生就讀; 適合中文和英文中學學生就讀; 精心編制練習和試題, 精心編制練習和試題,協助同學盡快 助同學盡快掌握答題技巧 盡快掌握答題技巧. 掌握答題技巧. 黎 sir 在中學和大學時代已是一名傑出學生, 在中學和大學時代已是一名傑出學生, 曾獲取多項學業上和運動上的獎學金及獎項; 曾獲取多項學業上和運動上的獎學金及獎項; 曾代表香港參加國際性運動比賽 曾代表香港參加國際性運動比賽, 國際性運動比賽, 取得優異成績, 取得優異成績, 「又讀得又玩得」 又讀得又玩得」, 絕不是死讀書的書呆子. 絕不是死讀書的書呆子. 黎 sir 在就讀大學時曾於全球最大美資電腦公司任實習生超過一年, 在就讀大學時曾於全球最大美資電腦公司任實習生超過一年, 大學畢業後旋即於全港大 大學畢業後旋即於全港大型英資 電腦公司, 電腦公司, 負責主理該公司所代理的全球大 負責主理該公司所代理的全球大型美資電腦公司儲存系統銷售業務. 美資電腦公司儲存系統銷售業務. 於短短半年內將該產品線銷售業績提升超過 50%. 同時更被公司評選為 同時更被公司評選為" 被公司評選為"傑出表現員工 Outstanding Performer" , 成功將書本上的知識靈活運用於工作上. 成功將書本上的知識靈活運用於工作上. 黎 sir 為了教學理想, 為了教學理想, 毅然辭去工作, 毅然辭去工作, 全身投入教學事業, 全身投入教學事業, 希望將自己的一套學習方法教授學生 黎 sir 教室 課程特色 小組教學 (1 – 6 人), , 導師親身教學; 導師親身教學; 照顧每位學生需要, 照顧每位學生需要, 事半功倍. 事半功倍. 精心編制筆記 精心編制筆記, 筆記, 練習以近 30 年本地和外國公開試題為藍本. 年本地和外國公開試題為藍本 . 概念理解, 概念理解, 取分技巧並重; 取分技巧並重; 協助同學盡快 助同學盡快掌握答題技巧 盡快掌握答題技巧. 掌握答題技巧. 歡迎自由組合小組上課, 歡迎自由組合小組上課, 時間及課程內容編排更有彈性. 時間及課程內容編排更有彈性. 時間及課程請瀏覽以下網址 時間及課程請瀏覽以下網址: 請瀏覽以下網址: www.andylai.hk 地鐵: 地鐵: 旺角 E2 出口, 出口, 油麻地 A2 出口 小巴: 小巴: 1, 1A, 2, 3C, 6, 6C, 6F, 9, 30X, 35A, 41A, 42A, 60X, 63X, 68X, 69X, 81S, 87D, 93K, 95, 104, 117, 203, 212, 230X, 234P, 234X, 238P, 238S, 259B, 270P, 281A 小巴: 小巴: 21K, 74, 74S 上課地址: 上課地址 香港九龍旺角煙廠街 9 號興發商業大廈 706 室. 查詢熱線 查詢熱線: 熱線: 6772 3001 電郵地址 電郵地址: enquiry@andylai.hk 網址: www.andylai.hk