What is the speed of the rock just before it strikes ground

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Reference no: EM13701996

Solve the all parts of given problem:

Problem: A rock is thrown vertically upward with a speed of 18.0m/s from the roof of a building that is 40.0mabove the ground. Assume free fall.

Part A: In how many seconds after being thrown does the rock strike the ground?

Part B: What is the speed of the rock just before it strikes the ground?

I am not able to get the correct solution please help me.

Reference no: EM13701996

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