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## Homework Statement

A rocket is shot straight up with an initial speed at 500 m/s.

## Homework Equations

The equations the teacher went over beforehand were

Y

_{f}= 1/2 A(T)^2 + V

_{i}(T) + Y

_{i}

V

_{f}= A(T) + V

_{i}

## The Attempt at a Solution

So far I have

V

_{f}= (-9.8)(T) + 500 m/s

Y

_{f}= 4.9T

^{2}+ 500T + 0

...and I have no idea how to go about solving for the rest of the unknown variables. It seems like I need T somehow, but I don't know how I can get it from the information given.