(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A bullet is shot straight up into the air. It reaches a maximum height at h = 612 m.

Find an expression for the initial speed of the ball.

Using your previous results find a numeric time for the total flight time, t until the ball reaches the ground.

2. Relevant equations

3. The attempt at a solution

Ok so im assuming at initial speed y is 0 although it seems like Vo would be zero there to but if i do i got Vot=(1/2)gt^2 Vo = (1/2)gt i think thats right for projectile motion, if it is the expression for t is = 2Vo/g because at that time y=yo=0, but now how do i get a numeric value for it i can't figure out Vo, initial velocity, is it just zero? im pretty stuck here

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# Homework Help: Intro projectile motion

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