Impulse and Momentum

1.    Which has more momentum, a heavy truck moving at 30 m/s or a light truck moving at 30 m/s?

• Heavy truck                          

• light truck

• Both have same momentum

• Cannot be determined

2. Which of the following statements is incorrect about impulse and momentum?

•   When an object is at rest its momentum is greater

• When an object’s velocity changes, momentum changes

• When the time of collision is longer, force of impact is smaller

• The amount of the object’s momentum is equal to the force needed to stop it.

3. A tennis player hits an approaching ball with a force of 750 N. If the player hits the ball in 0.002 s, how much impulse was imparted to the tennis ball?

• 1.5 N.s

• 5 N.s

• 1.3 N.s

• 2 N.s

4. A bowling ball which mass is 4.0 kg. is rolling at a rate of 2.5 m/s to the right. What is the momentum of the bowling ball? ?

• 20 kg. m/s, right

• 3.7 kg. m/s, right

• 10 kg. m/s, right

• 15 kg. m/s, right

5. A skateboard is rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg. m/s. What is the mass?

• 5 kg.

• 2 kg.

• 7 kg.

• 9 kg.

6. A pitcher throws a baseball with a mass of 0.5 kg. and a momentum of 10 kg. m/s north. What is the velocity?

• 15 m/s, north

• 18 m/s, north

• 2.5 m/s, north

• 20 m/s, north

7. Which has more momentum, a huge truck at rest or a small toy cart that is in motion?

• toy cart

• truck

• same momentum

• cannot be determined

8. A golf player hits the 0.02 kg golf ball, giving it a speed of 25 m/s. What is the impulse does he impart to the ball?

• 0.50 N.s

• 20.5 N.s

• 35 N.s

• 150 N.s

9. A tennis player hits an approaching ball with a force of 750 N. If the player hits the ball in 0.002 s, how much impulse was imparted to the tennis ball?

• 5.1 N.s

• 1.5 N.s

• 2.5 N.s

• 52 N.s

10. 1.    A baseball bat applies a 22 N force to a baseball over a period of 0.13 s, what is the change in momentum experienced by the ball?

• 8.34 N.s

• 23.5 N.s

• 15.789 N.s

• 2.86 N.s