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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
vf2 = v02 + 2a[tex]\Delta[/tex]X
The Attempt at a Solution
In order to find the acceleration(gravity of the planet in this case) of the astronaut, I used following formula.
vf2 = v02 + 2a[tex]\Delta[/tex]X
If I solve for 'a', then I get
a = (vf2-vo2) / 2[tex]\Delta[/tex]X
I pluged in the numbers,
a = (9m/s) / 2(0.5 m) = 9 m/s2
which doesn't make sense because the radius of the planet is only 3560 m.
please help me what to do next.