# What is the potential energy of a person who has ascended from the foot of a hill to its top?

What is the potential energy of a person who has ascended from the foot of a hill to its top? The height of the hill is 20 m, the mass of a person is 50 kg, the foot of the hill is at sea level.

Given:
h = 20 m; m = 50 kg;
E sweat. -?;
Potential energy is energy that is determined by the mutual position of interacting bodies or parts of the same body.
E sweat. = mgh,
E is the potential energy of the body, m is its mass, g is the acceleration of gravity (9.8), h is the height of the body above some zero level.
Decision:
E = 50 kg * 20 m * 9.8 m / s ^ 2 = 9800 J
Answer: E sweat. = 9800 J.

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