A rock is thrown upward with a speed of 48 feet per second from the edge of a cliff 400 feet above the ground. What is the speed of the rock when it hits the ground? Use acceleration due to gravity as –32 feet per second squared and approximate your answer to 3 decimal places.

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anonymous · Answer

First thing, draw a picture, kinematic problems and actually all physics problems require a picture if you want to understand what's going on!