SOLUTION: A stone is thrown straight upward and it rises to a maximum height of 20 m. Determine with what speed was it thrown?

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Question 1161026: A stone is thrown straight upward and it rises to a maximum height of 20 m.
Determine with what speed was it thrown?
Answer by ikleyn(53751)   (Show Source): You can put this solution on YOUR website!
.

In Physics, they write the Energy conservation equation


     = mgh     (1)


and then obtain from this formula (after canceling the mass "m" in both sides)


    v = .      (2)


According to formula (2)


    v =  =  = 19.81 m/s.


You can round it to 20 m/s.


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