Question

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?

Answer 1

m g h = Potential energy at top = 822

60 (9.81) h = 822

h = 1.4 meters

Answer 2

the answer is 0.2, you unintelligent spork.