Quiz 11:

1. Momentum of an object is...

2. An object moving with a speed of 0.36 m ⁄ s has a momentum of 4.8 kg m ⁄ s. Calculate its mass.

3. A object of mass 0.2 kg moving to the right with a speed of 18 m ⁄ s hits a wall and bounces back to the left with a speed of 7 m ⁄ s. Calculate the change in its momentum.

4. An object of mass 0.24 kg falling vertically downward hits the ground with a speed of 12 m ⁄ s and bounces back vertically upward with a speed 8 m ⁄ s. If the object was in contact with the ground for 0.15 seconds, calculate the average force exerted by the ground on the object.

5. An object was acted upon by a force of 3 for 0.7 seconds. Calculate the change in its momentum.

6. An object of mass 5.5 kg was acted by a force of 18.2 N for 2.4 seconds. If its initial speed was 2.8 m ⁄ s, calculate its final speed.

7. An object of mass 6 kg moving with a speed of 30 m ⁄ s to the right collides with an object of mass 19 kg moving with a speed of 2 m ⁄ s in the same direction. After collision, the 6 kg object moves to the right with a speed of 3 m ⁄ s to the right. Calculate the velocity of the 19 kg object after collision.

8. An object of mass 12 kg moving with a speed of 26 m ⁄ s to the right collides with an object of mass 17 kg moving with a speed of 16 m ⁄ s to the left. After collision, the 17 kg object moves to the right with a speed of 2 m ⁄ s to the right. Calculate the velocity of the 12 kg object after collision.

9. An object of mass 8 kg moving with a speed of 28 m ⁄ s to the right collides with an object of mass 13 kg moving with a speed of 12 m ⁄ s to the left. If the collision is completely inelastic, calculate their speed after collision.

10. An object of mass 14 kg moving with a speed of 29 m ⁄ s to the right collides with an object of mass 13 kg at rest. If the collision is completely inelastic, calculate the kinetic energy lost during the collision.