SUBJECT : GENERAL PHYSICS

TOPIC : LAW OF ACCELERATION

1. Which describes the motion of an object if it experiences a constant, non-zero net force?

a.It moves with constant velocity. b.It is at rest. c.It moves with constant speed. d.It accelerates.

3. When playing billiards, if the action force is exerted by a cue ball on an eight ball, then the reaction force is ___________.

a.exerted by the cue ball on the table b.exerted by the cue stick on the cue ball c.exerted by the eight ball on the cue ball d.exerted by the ninth ball on the cue ball

4. During a crash test, a 20-ton truck collides with an 800-kg car and causes a lot of damage to the car. During the collision, the force exerted on the car by the truck is _________ the force exerted on the truck by the car.

a.greater than b.less than c.equal to

5. When a gymnast lands on a trampoline, the trampoline causes the gymnast to slow down as she moves downward. What is the direction of the net force acting on the gymnast as she slows down?

a.upward b.downward c.upward, and then downward d.downward, and then upward

6. According to Newton's second law, when equal magnitude of net force is exerted to two objects of different masses, then _____.

a.the heavier object will experience less acceleration than the lighter object b.the heavier object will experience the same amount of acceleration as the lighter object c. the heavier object will experience greater acceleration than the lighter object

7. A motorcycle is at rest when a heavier, moving truck hits it. Assume that the effects of friction are negligible. Between the motorcycle and the truck, which object exerted a greater force on the other during the collision?

a.the truck b the motorcycle c.both exert the same magnitude of force on each other d.not enough information is given

8. In the previous item, between the motorcycle and the truck, which had a greater acceleration?

a.the truck b. the motorcycle c. both had equal magnitudes of acceleration

2:43 PM $ 1 1 8 ... VPN L'E ill -1 47 For items 9 and 10, refer to this situation: Consider a man that holds a barbell upward as shown in the figure below. O