Asked by Joe

Alfredo, who has a mass of 60 kilograms, jumped off a retaining wall. His kinetic energy when he landed on the ground was 822 joules. How high was the wall?
Answered by Damon
m g h = Potential energy at top = 822

60 (9.81) h = 822

h = 1.4 meters
Answered by Anonymous
the answer is 0.2, you unintelligent spork.
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