- #1

- 88

- 4

## Homework Statement

**A ball is traveling at 3m/s then bounces off of a tennis racket and returns at 2m/s. If the ball is in contact with the racket for 12ms, what is the average acceleration?**

## Homework Equations

average acceleration and conversion

a=Vf-Vi/Tf-Ti

1s= 1000ms

## The Attempt at a Solution

Before I started, I converted 12ms to s and got 0.012s. I know the equation for avg acceleration. but I feel like I'm missing a step. I plug in the numbers and get an unrealistic solution. The answer comes out negative. I feel like I am missing something. Or I am making it too complicated for myself.