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Standing on the surface of a small
spherical moon whose radius is
6.05. 104 m and whose mass is
8.89. 1018 kg, an astronaut throws a
rock of mass 1.75 kg straight
upward with an initial speed of 31.5
m/s. (This moon is too small to
have an atmosphere.) What
maximum height above the surface
of the moon will the rock reach?

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