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Homework Statement
An astronaut on a strange planet finds that he can jump a maximum horizontal distance of 30m if his initial speed is 9m/s. What is the acceleration of gravity on the planet?
Homework Equations
Vf^2=Vi^2+2a(Xf-Xi)
The Attempt at a Solution
I used the formula mentioned above, plugged in number
Vf=0m/s
Vi=9m/s
X=Xf-Xi=30m
and get a=-1.35m/s^2
I'm not sure if it is correct, could someone double check and tell me if I did anything wrong? Thanks