Chapter 7

Momentum and Collisions

Example 7-6

When raindrops strike the umbrella they tend to spatter and run off; when hailstones hit the umbrella they bounce back upward. As a result, the change in momentum is greater with the hail–just as the change in momentum is greater for a rubber ball bouncing off the floor, than it is for a beanbag landing on the floor. Hence, the impulse and the force are greater with hail.

(b) The force is greater in the hail.

Back to the Study Guide