|Sep26-08, 01:54 PM||#1|
freely falling bodies
1. The problem statement, all variables and given/known data
A ball is thrown straight upward and rises to a maximum height of 18 m above its launch point. At what height above its launch point has the speed of the ball decreased to one-half of its initial value?
2. Relevant equations
i dont know.
3. The attempt at a solution
vi=0, d=18m, g=9.81, this is all i know.
|Sep26-08, 02:20 PM||#2|
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