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July 5, 2015

Homework Help: physics

Posted by Natasha on Sunday, January 29, 2012 at 4:02pm.

A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.0s later it is rising at a speed of 15m/s. Assuming air resistance has no effect, calculate its speed A) at launch and B) 5.0s after lauch

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