Which of the following is an example of the conversion of kinetic energy into gravitational potential energy?

a person skiing down a hill

a car racing around an oval track

a person walking up a hill

a person parachuting out of an airplane

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

What is the best conclusion based on this data? the hypothesis was not supported because the data indicated that fertilizing plants does not improve plant growth. the hypothesis was supported; to get the best growth, use 5 milliliters of fertilizer per plant. the hypothesis was not supported; the data indicated that too much fertilizer can inhibit plant growth. the hypothesis was supported; to get the best growth, use 15 milliliters of fertilizer per plant.

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?