A 1.00-kilogram ball is dropped from the top of a building. just before striking the ground, the ball's speed is 12.0 meters per second. what was the ball's gravitational potential energy, relative to the ground, at the instant it was dropped? [neglect friction.]

Question

Malaki Harvey

Physics

4 April, 13:37

A 1.00-kilogram ball is dropped from the top of a building. just before striking the ground, the ball's speed is 12.0 meters per second. what was the ball's gravitational potential energy, relative to the ground, at the instant it was dropped? [neglect friction.]

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Answers (1)

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Ashton Galvan · Answer 1

During the fall, the potential energy stored in the ball is converted into kinetic energy.

Thus,

PE = KE before hitting the ground

= 1/2 • mv^2

= 1/2 • 1 • 12^2

= 72J