A 290 g ball is initially at rest has fallen off of a 15 m high...

Question

Question

A 290 g ball is initially at rest has fallen off of a 15 m high cliff. Assume the base of the cliff is where y = 0 m.

Calculate the gravitational potential energy.

What is the kinetic energy of the ball right before it hits the ground?

Calculate the speed of the ball right before it hits the ground.

Answer 1

Answer #1

U = 0 h = 15m m = 290kg P. E mg h 0.29 x 15 x 9.8 P. E 42.63 Joules ازبار KIE: Imuz 2 2 or urigh v² = 9.8 x 2 x 15 17. 14 ans

Answer 2

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