Wednesday
July 30, 2014

Homework Help: Physics

Posted by Gina on Wednesday, October 8, 2008 at 7:45pm.

Hi,
I honestly don't know how to approach this question and what equation to use.

A 50.0 g Super Ball traveling at 28.0 m/s bounces off a brick wall and rebounds at 18.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.50 ms, what is the magnitude of the average acceleration of the ball during this time interval? (Note: 1 ms = 10-3 s.)

Can anyone help me? What equation would I use and would I use -g or a +g?

Thanks in advance.

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