(adsbygoogle = window.adsbygoogle || []).push({}); Simple throwing ball "up" problem

1. The problem statement, all variables and given/known data

Ball is thrown vertically with upward velocity of 18m/s when it reaches 1/4 of its maximum height above its launch point. Find initial launch velocity of ball.

2. Relevant equations

0.5mv2, mgh, v=d/t

3. The attempt at a solution

The 1/4 of the maximum height is throwing me off.

I tried using kinematics equations to first solve for the first part of the throw (the 1/4)

and then use final velocity of zero at the max height using deceleration of gravity to find this height.

I'm stumped, any help is appreciated.

Thanks.

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# Homework Help: Simple throwing ball up problem

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