First Nine Weeks Exam Study Guide
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
____
1. Snowshoes enable a person to walk on deep snow because the snowshoes
2. Kinetic energy increases as mass _ __ and velocity ______
3. Give examples of an object that has has kinetic energy?
4. Unlike kinetic energy, potential energy is
5. Potential energy that depends on height is called
6. Which of the following is an example of exerting a force?
7. What happens when two forces act in the same direction?
8. The tendency of an object to resist change in its motion is known as
9. The greater the mass of an object, _ its inertia
10. The force of gravity on a person or object on the surface of a planet is called
11. The force that one surface exerts on another when the two rub against each other is called
12. Which of the following is an example of rolling friction?
13. The achievement of lifting a rocket off the ground and into space can be explained by
14. What is required for a rocket to lift off into space?
15. Any force that causes an object to move in a circle is called a(n)
16. According to Newton’s third law of motion, when a hammer strikes and exerts force on a nail,
17. The SI unit for force is the
18. A unit of pressure is called a
19. Given that the air pressure outside your body is so great, why aren’t you crushed
20. One application of Pascal’s principle is a
21. What does a hydraulic system do?
22. Pascal’s principle states that when force is applied to a confined fluid, the change in pressure
23. Speed equals distance divided
24. When you know both the speed and direction of an object’s motion, you know the
25. You can show the motion of an object on a line graph in which you plot
26. Give an example of deceleration?
27. If the speed of an object does NOT change, the object is traveling at a _____ speed
28. If a bicyclist travels 30 kilometers in two hours, her average speed is
29. A car travels 85 km in the first hour of a trip. The car continues to travel for 2 more hours and travels 200
km. What was the average speed of the car for the trip?
30. Give a equation for accelerationn?
31. Energy is measured in units called joules or newton.meters
32. The energy associated with motion is called kinetic energy
33. An example of something that stores chemical energy is batteries
Use the diagram to answer each question.
34. Which letters represent the positions of maximum potential energy of the pendulum? A and E because pendulum is the highest at
these points.
35. Describe how the kinetic and potential energies of the pendulum are changing at position B. Kinetic energy is increasing and potential
energy is decreasing
36. Is the potential energy of the pendulum changing at position E?
Use the diagram to answer each question.
37. What two variables are plotted in the graph?
38. How would you describe Kathy’s motion? What does such motion mean?
39. How far did Kathy jog in the first 4 minutes?
40. What is Kathy’s average speed? Average speed _distance /time=
Use the diagram to answer each question.
41. What two variables are plotted in the graph?
42. What does the line segment on the graph from 0 to 3 seconds represent?
44. What happened to the speed of the ball during the final two seconds?
45.Does the graph indicate that the ball decelerated?
First Nine Weeks Exam Study Guide
Answer Section
MULTIPLE CHOICE
1. ANS: B
DIF: L2
REF: p. PS-373
SHORT ANSWER
2. ANS:
both mass and velocity increase.
DIF: L3
REF: p. PS-444
3. ANS:
a rolling bowling ball
OBJ: PS.13.1.2
DIF: L3
4. ANS:
stored.
REF: p. PS-444
OBJ: PS.13.1.2
DIF: L1
REF: p. PS-445
5. ANS:
gravitational potential energy.
OBJ: PS.13.1.2
DIF: L1
REF: p. PS-445
6. ANS:
a carpenter hammering a nail
OBJ: PS.13.1.2
DIF: L3
7. ANS:
They add together.
REF: p. PS-334
OBJ: PS.10.1.1
DIF: L2
8. ANS:
inertia.
REF: p. PS-335
OBJ: PS.10.1.2
DIF: L1
REF: p. PS-350
9. ANS:
the greater its inertia.
OBJ: PS.10.3.1
DIF: L2
10. ANS:
weight.
REF: p. PS-350
OBJ: PS.10.3.1
DIF: L1
11. ANS:
friction.
REF: p. PS-345
OBJ: PS.10.2.2
OBJ: PS.11.1.1
DIF: L1
REF: p. PS-341
12. ANS:
bike tires on the road as you ride
OBJ: PS.10.2.1
DIF: L2
REF: p. PS-342
13. ANS:
Newton’s third law.
OBJ: PS.10.2.1
DIF: L2
REF: p. PS-363
14. ANS:
thrust that is greater than Earth’s gravity
OBJ: PS.10.5.1
DIF: L2
15. ANS:
centripetal force.
OBJ: PS.10.5.1
REF: p. PS-363
DIF: L1
REF: p. PS-363
OBJ: PS.10.5.2
16. ANS:
exerts an equal force back on the hammer.
DIF: L3
17. ANS:
newton.
REF: p. PS-353
OBJ: PS.10.4.1
DIF: L1
18. ANS:
pascal.
REF: p. PS-335
OBJ: PS.9.1.1
DIF: L2
REF: p. PS-373
OBJ: PS.11.1.1
19. ANS:
Pressure inside your body balances the air pressure outside your body.
DIF: L2
20. ANS:
a hydraulic car lift.
REF: p. PS-375
OBJ: PS.11.1.2
DIF: L2
21. ANS:
multiply force
REF: p. PS-390
OBJ: PS.11.3.1
DIF: L1
REF: p. PS-391
22. ANS:
equally to all parts of the fluid.
OBJ: PS.11.3.2
DIF: L1
23. ANS:
time.
REF: p. PS-389
OBJ: PS.11.4.1
DIF: L1
REF: p. PS-312
OBJ: PS.9.2.1
24. ANS:
velocity of the object.
DIF: L1
25. ANS:
time.
REF: p. PS-314
OBJ: PS.9.2.1
DIF: L1
REF: p. PS-316
26. ANS:
a car approaching a red light
OBJ: PS.9.2.2
DIF: L2
27. ANS:
constant speed.
REF: p. PS-321
OBJ: PS.9.3.1
DIF: L1
28. ANS:
15 km/h.
REF: p. PS-313
OBJ: PS.9.2.1
DIF: L3
29. ANS:
95 km/h
REF: p. PS-313
OBJ: PS.9.2.1
DIF: L3
30. ANS:
REF: p. PS-313
OBJ: PS.9.2.1
DIF: L1
31. ANS:
joules.
REF: p. PS-322
OBJ: PS.9.3.2
DIF: L1
32. ANS:
kinetic energy.
REF: p. PS-443
OBJ: PS.13.1.1
DIF: L1
33. ANS:
battery
REF: p. PS-443
OBJ: PS.13.1.2
DIF: L2
REF: p. PS-450
OBJ: PS.13.2.2
34. ANS:
A and E, because the pendulum is highest at these points
DIF: L1
REF: p. PS-456
OBJ: PS.13.3.2
35. ANS:
The kinetic energy of the pendulum is increasing and the potential energy is decreasing. Potential energy is
being converted to kinetic energy.
DIF: L2
REF: p. PS-456
OBJ: PS.13.3.2
36. ANS:
No. The potential energy of the pendulum reaches its maximum value at position E, and is neither increasing
nor decreasing at that point.
DIF: L2
37. ANS:
distance and time
REF: p. PS-456, p. PS-457
OBJ: PS.13.3.2
DIF: L1
REF: p. PS-316
OBJ: PS.9.2.2
38. ANS:
Kathy is jogging at a constant speed. Her speed does not change as she moves.
DIF: L2
39. ANS:
600 m
REF: p. PS-316
OBJ: PS.9.2.2
DIF: L2
REF: p. PS-316
OBJ: PS.9.2.2
40. ANS:
Average speed = distance/time = 1,500 m/10 min = 150 m/min
DIF: L3
41. ANS:
speed and time
REF: p. PS-313
OBJ: PS.9.2.1
DIF: L1
REF: p. PS-324
OBJ: PS.9.3.3
42. ANS:
The segment represents constant acceleration. The speed increases by the same amount during each second.
DIF: L2
43. ANS:
REF: p. PS-324
OBJ: PS.9.3.3
DIF: L3
REF: p. PS-324
OBJ: PS.9.3.3
44. ANS:
The ball’s speed was constant; it did not change.
DIF: L2
45. ANS:
REF: p. PS-324
OBJ: PS.9.3.3
No. Deceleration is a negative acceleration, which means an object slows down. According to the graph, the
ball’s velocity increased in the first three seconds and then remained the same for the next 2 seconds. It did
not slow down. Deceleration would be indicated by a line that slopes downward.
DIF: L2
REF: p. PS-324
OBJ: PS.9.3.3