While skiing in Jackson, Wyoming, your friend Ben (of mass 84.2 kg) started his descent down the bunny run, 15.1 m above the bottom of the run. If he started at rest and converted all of his gravitational potential energy into kinetic energy, what is Ben's kinetic energy at the bottom of the bunny run? Answer in units of J.

Question

Physics

Monkey

14 March, 16:50

While skiing in Jackson, Wyoming, your friend Ben (of mass 84.2 kg) started his descent down the bunny run, 15.1 m above the bottom of the run. If he started at rest and converted all of his gravitational potential energy into kinetic energy, what is Ben's kinetic energy at the bottom of the bunny run? Answer in units of J.

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Ellen Garrison · Answer 1

Initial potential energy = mass x g x height

= 84.2 x 9.8 x 15.1

initial potential energy = 12460 J

final kinetic energy = initial potential energy = 12460 J