Posted by **sam** on Thursday, December 2, 2010 at 9:16pm.

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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