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July 29, 2014

Homework Help: physics

Posted by justin on Tuesday, July 2, 2013 at 9:31pm.

A dynamite blast at a quarry launches a rock straight upward, and 2.2 s later it is rising at a rate of 17 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b)4.4 s after launch.

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