- Which is a unit of momentum?
- 1 kg-m/s**2
- 1 N-m/s
- 1 N-m/s^2
- 1 kg-m/s

- Which object has the greatest momentum?
- 12-kg mass moving at 1 m/sec
- 4-kg mass moving at 4 m/sec
- 5-kg mass moving at 1 m/sec
- 9-kg mass moving at 3 m/sec

- A 5.0 newton force impacts an impulse of 15 Newton-seconds to an object. The force acted on the object for a period of
- 75 s
- 10. s
- 3 s
- 20. s

- An object traveling at 4.0 m/s has a momentum of 16 kg*m/s. What is the mass of the object ?
- 64 kg
- 20 kg
- 12 kg
- 4.0 kg

- A 1.0 kg mass changes speed from 2.0 m/s to 5.0 m/s. The change in the object's momentum is
- 9.0 kg*m/s
- 21 kg*m/s
- 3.0 kg*m/s
- 29 kg*m/s

- A 20 kg mass moving at a speed of 3.0 m/s is stopped by a constant force of 15 N. How many seconds must the force act on the mass to stop it?
- 0.20 s
- 1.3 s
- 5.0 s
- 4.0 s

- A net force of 12 N acting north on an object for 4.0 s will produce an impulse of
- 48 kg*m/s north
- 48 kg*m/s south
- 3.0 kg*m/s north
- 3.0 kg*m/s south

- A 5.0 kg cart moving at a velocity of 4.0 m/s is brought to a stop in 2.0 s. The magnitude of the average force used to stop the cart is
- 20. N
- 2.0 N
- 10. N
- 4.0 N

- A force of 10. N acts on an object for 0.010 s. What force, acting on the object for 0.050 s, would produce the same impulse?
- 10. N
- 1.0 N
- 5.0 N
- 2.0 N

- A constant unbalanced force of friction acts on a 15.0 kg mass moving at 10.0 m/s. If the mass is brought to rest in 1.50 s, what is the magnitude of the force of friction ?
- 10.0 N
- 100. N
- 150. N
- 147 N