Q: When someone falls, the kinetic energy the person has upon reaching the floor is the amount of what energy lost by falling through height?


Read this paragraph and choose the correct option from the provided answers:

with a minus sign because the displacement while stopping and the force from floor are in opposite directions (cos θ = cos 180º = − 1) . The floor removes energy from the system, so it does negative work. The kinetic energy the person has upon reaching the floor is the amount of potential energy lost by falling through height.

 Choices:

- gravitational energy

- thermal energy

- nuclear energy

- potential energy


A:
potential energy