February 28, 2017

Homework Help: physics

Posted by student on Monday, September 5, 2011 at 11:19pm.

A rock is thrown vertically upward with a speed of 14.0 m/s from the roof of a building that is 50.0 m above the ground. Assume free fall.

In how many seconds after being thrown does the rock strike the ground? in s

What is the speed of the rock just before it strikes the ground? in m/s

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