February 23, 2017

Homework Help: physics

Posted by anton on Sunday, February 21, 2010 at 2:39am.

You throw a 20-N rock vertically into the air from ground level. You observe that when it is 15.0 m above the ground, it is travelling at 25.0 m/s upward. Use the work-energy theorem to find a) its speed just as it left the ground; b) its maximum height.

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