- #1

cyspope

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## Homework Statement

An astronaut lands on an unknown planet with a radius of 3560 m. When she jumps upward with an initial speed of 3.00m/s she rises to a height of 0.50 m. What is the mass of the planet?

## Homework Equations

d = rt

x = x

_{0}+ v

_{0}t + [tex]\frac{1}{2}[/tex]at

^{2}

M = gr

^{2}/ G

## The Attempt at a Solution

0.5 m / (3.0m/s) = [tex]\frac{1}{6}[/tex]s

0.5 = 0 + 3[tex]\frac{1}{6}[/tex]s + [tex]\frac{1}{2}[/tex]a[tex]\frac{1}{6}[/tex]

^{2}

0.5 = [tex]\frac{1}{2}[/tex] + [tex]\frac{1}{2}[/tex]a[tex]\frac{1}{36}[/tex]

a = 0 m/s

^{2}?

I have no idea what to do. please help me.