A sled and rider with a combined mass of 140 kg are at the top of a hill of height 12.5 m above the level ground below. The sled is given a push providing an initial kinetic energy of 1550 J at the top of the hill. Choosing a reference level at the bottom of the hill, what is the potential energy of the sled and rider at the top of the hill?

Question

Lauren Mills

Physics

28 September, 15:01

A sled and rider with a combined mass of 140 kg are at the top of a hill of height 12.5 m above the level ground below. The sled is given a push providing an initial kinetic energy of 1550 J at the top of the hill. Choosing a reference level at the bottom of the hill, what is the potential energy of the sled and rider at the top of the hill?

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Answers (1)

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Ali Silva · Answer 1

17150 J

Explanation:

m = 140 kg. h = 12.5 m, g = 9.8 m/s^2

The potential energy at the top of the hill is

U = m g h

U = 140 x 9.8 x 12.5 = 17150 J