- #1
mandaa123
- 8
- 0
Homework Statement
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?
Homework Equations
i don't know.
The Attempt at a Solution
vi=0, d=18m, g=9.81, this is all i know.