- #1

jevillan

- 8

- 0

## Homework Statement

A mass 100.0 g is dropped from some height above the ground and rebounds to a point where it has 78% of its initial gravitational potential energy. As it hits the ground, it is moving at 1.2 m/s. What is the impulse imparted by the ground on the ball?

## Homework Equations

impulse = m(vf-vi)

## The Attempt at a Solution

impulse = (0.1)(1.2 m/s - 0 m/s)

=0.12 kg m/s

I followed the formula for impulse, but i feel like I did it wrong because there was a lot more information given in the problem that I didn't use in my solution