Which of the following is using primarily kinetic energy

A two friends drinking a soda on a park bench

B a bucket of paint sitting on a ladder

C a bowling ball rolling down a bowling alley

D a furnace warming up a house on a cold day

a bowling ball rolling down a bowling alley

Answer: C) a bowling ball rolling down a bowling alley

Explanation:

Potential energy is the energy possessed by an object by virtue of its position.

Kinetic energy is the energy possessed by an object by virtue of its motion.

a) two friends drinking a soda on a park bench possess potential energy as they are not in motion.

b) a bucket of paint sitting on a ladder possess potential energy as they are not in motion.

c) a bowling ball rolling down a bowling alley possess kinetic energy as it is in motion.

d) a furnace warming up a house on a cold day possess potential energy as it is not in motion.

Thus a bowling ball rolling down a bowling alley is primarily using kinetic energy.