# physics

A 0.70 kg ball is moving horizontally with a speed of 8.8 m/s when it strikes a vertical wall. The ball rebounds with a speed of 3.7 m/s. What is the magnitude of the change in linear momentum of the ball?
-I am not sure how to honestly to figure this one out.

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1. Mass times velcity change.

0.70 kg*[8.8 -(-3.7] m/s
= 0.70 kg*12.4 m/s
= ____ kg*m/s

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posted by drwls

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