What speed does the rock impact the moon

Reference no: EM13677271

For a spherical celestial object of radius R, the acceleration due to gravity g at a distance x from the center of the object is g = g0R2/x2, where g0 is the acceleration due to gravity at the object's surface and x > R. For the moon, take g0 = 1.63 m/s2 and R = 3200 km. If a rock is released from rest at a height of 5R above the lunar surface, with what speed does the rock impact the moon?

Hint: Its acceleration is a function of position and increases as the object falls. So do not utilize constant acceleration free-fall equations, however go back to basics.

Speed = km/s

Reference no: EM13677271

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