- #1

x2017

- 84

- 1

## Homework Statement

Consider the following two scenarios.

(A) A pitcher throws a ball at -55m/s and the batter swims at 25m/s.

(B) A pitcher throws a ball at -25m/s and the batter swings at 55m/s.

The ball has a mass of 0.15kg and the bat has a mass of 1kg. Assume that the impact between the ball and the bat lasted for 0.3s, the coefficient of restitution was 0.5 and that the force of impact maintained a constant value throughout impact.

__Question a)__For both scenarios: what impulse was exerted on the ball by the bat?

__Question b)__For both scenarios: how much work was done on the ball by the bat?

## Homework Equations

ΣFΔt=mΔv

W=FΔd

## The Attempt at a Solution

I thiiiink that I got question a)

(A)

ΣFΔt=mΔv

ΣFΔt=(1)(25)

ΣFΔt=25Ns

(B)

ΣFΔt=mΔv

ΣFΔt=(1)(55)

ΣFΔt=55Ns

I am unsure of how to go from impulse to calculate work in question b).