1. The impulse is equal to the (a) force times distance, (b) mass times time, (c) force times time, (d) force divided by distance.

2. The impulse applied to an object is equal to the change in its (a) kinetic energy, (b) acceleration, (c) momentum, (d) velocity.

3. Which of the following is not a form of energy? (a) heat, (b) electricity, (c) force, (d) light.

4. In order to reduce the "sting" in catching a hard ball, one usually (a) increases the change in momentum, (b) increases the contact force, (c) increases the contact time, (d) increases the impulse.

5.Which of the following are conserved in an elastic collision?

(a) momentum, (b) kinetic energy, (c) impulse, (d) momentum and kinetic energy.

6.Which of the following are conserved in an inelastic collision?

(a) momentum, (b) kinetic energy, (c) impulse, (d) momentum and kinetic energy.

7. If the mass of a moving object is doubled without changing the velocity, its momentum

(a) remains the same, (b) is doubled, (c) is quadrupled, (d) is halved.

8. If the angular speed of a rotating object is doubled, its rotational energy is (a)doubled, (b) tripled, (c) quadrupled, (d) halved.

9. The units for angular speed in the metric system of units are (a) km/s, (b) m/s, (c) radians/second, (d) mi/s.

10. The units for angular acceleration in the metric system of units are (a) radians/s, (b) m/s², (c) degrees/second, (d) radians/s²

11. The point where all the mass of a body can be considered to be concentrated is known as the center of (a) gravity, (b) mass, (c) weight, (d) torque.

12. The time rate of change of angular velocity is known as angular (a) inertia, (b) momentum, (c)velocity, (d) acceleration.

13. Rotational kinetic energy (a) depends on the mass distribution of a body, (b) is equal to Iw, (c) requires the conservation of angular momentum, (d) is the same as translational kinetic energy.

14. The perpendicular distance from the axis of rotation to a line along which a force acts is known as the (a) torque, (b) moment of inertia, (c) angular force, (d) lever arm.

15. Newton's second law of rotational motion states that torque equals (a) moment of inertia times angular velocity, (b) mass times acceleration, (c) moment of inertia times angular acceleration, (d) mass times angular velocity.

16. What is the magnitude of the change in momentum produced when a force of 5N acts on a 10 kg object for 3 seconds?

(a) 1.5 kgm/s (b) 5 kgm/s (c) 10 kgm/s (d) 15 kgm/s

17. A 20 kg mass moving at a speed of 3 m/s is stopped by a constant force of 15 N. How many seconds must the force act on the mass to stop it?

(a) 0.2 s (b) 1.3 s (c) 5.0 s (d) 4.0 s

18. A force of 20 N is exerted on a cart for 10 seconds. How long must a 50 N force act to produce the same impulse?

(a) 10 s (b) 2.0 s (c) 5.0 s (d) 4.0 s

19. An impulse of 30 Ns is applied to a 5kg mass. If the mass had a speed of 10 m/s before the impulse, its speed after the impulse could be

(a) 25m/s (b) 16 m/s (c) 6.0 m/s (d) 18 m/s

20. A 5 N force imparts an impulse of 15 Ns to an object. The force acts on the object for a period of

(a) 0.3 s (b) 7.0 s (c) 3.0 s (d) 75 s