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

Rhianna Burton

19 August, 23:19

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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Layne Key · 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