Net Work & Kinetic Energy Video Lessons

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Problem: A 60 kg runner in a sprint moves at 11 m/s. A 60 kg cheetah in a sprint moves at 33 m/s.By what factor does the kinetic energy of the cheetah exceed that of the human runner?

FREE Expert Solution

Kinetic energy:

K=12mv2

where m is the mass and v is the velocity.

Krunner = (1/2)(60)(112) = 3630 J

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Problem Details

A 60 kg runner in a sprint moves at 11 m/s. A 60 kg cheetah in a sprint moves at 33 m/s.

By what factor does the kinetic energy of the cheetah exceed that of the human runner?

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