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July 30, 2015

Homework Help: Physics

Posted by Sarah on Wednesday, October 12, 2011 at 12:03pm.

A dynamite blast at a quarry launches a rock straight upward, and 1.5 s later it is rising at a rate of 19 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b)4.6 s after launch.

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