(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A tennis ball of with a mass of .045 kg and speed of 25 m/sec strikes a wall at an angle of 45 degrees and rebounds with the same spped at 45 degrees. What is the impulse given the wall?

2. Relevant equations

I= pf-pi/t

3. The attempt at a solution

I= mv-mv/t

(.045)(25)-(-.045)(25)/1

1.125-1.125/1

I=2.25

I know the answer is 2.1, but don't know how to get it.

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# Homework Help: What is the impulse given the wall?

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