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## Homework Statement

A ball is thrown vertically up from y=0 at time t=0 with v

_{initial}=v

_{0}j. Show that the time it takes for the ball to reach the ground is twice the time it takes to reach its maximum height.

## Homework Equations

h=(v

_{i}

^{2}sintheta

_{i})/2g

R=(v

_{i}

^{2}sin2theta

_{i})/g

## The Attempt at a Solution

I have no idea where to start solving this problem.