Honors Physics Name________ Quarter 1 review test Mr. Harwood period____ Ch2 #1) A sports car moving at constant speed travels 100 m in 5.2 s. If it then brakes and comes to a stop in 4.0 s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2. (Take the positive direction to be the direction of travel.) Ch2 #2) A car is behind a truck going 21 m/s on the highway. The car's driver looks for an opportunity to pass, guessing that his car can accelerate at 1.1 m/s2. He gauges that he has to cover the 20 m length of the truck, plus 10 m clear room at the rear of the truck and 10 m more at the front of it. a) How long will it take the car to pass the truck? b) How far did the car travel during this time? Ch3 # 1) A ball is thrown horizontally from the roof of a building 57 m tall and lands 35 m from the base. What was the ball's initial speed? Ch3 # 2) An athlete executing a long jump leaves the ground at a 35° angle and travels 6.30 m.What was the takeoff speed? Ch4 # 1) The carton shown in Fig. 4-55 lies on a plane tilted at an angle θ = 26.0° to the horizontal, with µk = 0.17. Determine the acceleration of the carton as it slides down the plane. Figure 4-55 Ch4 # 2) Arlene is to walk across a high wire strung horizontally between two buildings 12.0 m apart. The sag in the rope when she is at the midpoint is 10.0°, as shown in Figure 4-42. If her mass is 52.0 kg, what is the tension in the rope at this point? Figure 4-42 Ch5 # 1) Tarzan plans to cross a gorge by swinging in an arc from a hanging vine (Fig. 541). If his arms are capable of exerting a force of 1600 N on the rope, what is the maximum speed he can tolerate at the lowest point of his swing? His mass is 80 kg and the vine is 4.8 m long. Figure 5-41 Ch5 # 2) How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 82 m at a speed of 92 km/h? Chapter 4 Instructions: For problems 1-3,5, and 6 assume friction is present. For problems 2-3, assume the object is moving in the direction it is being pushed. 1. For the picture shown to the right: a. Draw an FBD for the object. b. Draw a modified FBD for the object. c. Show a net force equation for the forces in the line of motion. Fapp 2. For the picture shown to the right: a. Draw an FBD for the object. b. Draw a modified FBD for the object. c. Show a net force equation for the forces in the line of motion. 3. For the picture shown to the right: a. Draw an FBD for the object. b. Draw a modified FBD for the object. c. Show a net force equation for the forces in the line of motion. Fapp 4. For the picture shown to the right: a. Draw an FBD for m1 b. Draw an FBD for m2 c. Identify the positive direction of motion. d. Show a net force equation for the forces in the line of motion. 2 1 5. For the picture shown to the right: a. Draw an FBD for m. b. Draw an FBD for B. c. Identify the positive direction of motion. d. Show a net force equation for all the forces in the line of motion. 6. For the picture shown to the right: a. Draw an FBD for m b. Draw an FBD for B c. Draw a modified FBD for B d. Identify the positive direction of motion. e. Show a net force equation for all the forces in the line of motion. B m B m 7. For the picture shown to the right, the box dragged in a 90° (Northward) direction across a frictionless surface. Show the following: a. Draw an FBD for the box. b. Draw a modified FBD for the box. (using x and y components) c. Show a net force equation for the forces in the x-direction. d. Show a net force equation for the forces in the y-direction.