Question

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

a) a person walking up a hill
b) a person parachuting out of an airplane
c) a person skiing down a hill
d) a car racing around a oval track

Answer 1

a) a person walking up a hill .
walking => moving => having some velocity/speed => having KE ...

up => height(h) increases => PE = mgh increases .

thus , the KE got converted into Gravitational PE as the person walks up the hill.