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

A 138 g baseball, moving along the x axis with speed 21.0 m/s, strikes a fence at a 45° angle and rebounds along the y axis with unchanged speed. Give its change in momentum using unit vector notation.

_____ i + ______ j kg·m/s

2. Relevant equations

Momentum = (mass)(velocity)

3. The attempt at a solution

Honestly, our teacher hasn't taught us momentum, but gave us this assignment anyways. I'm really very confused. Any help would be great. :)

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# Homework Help: Momentum = (mass)(velocity)

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