Below are five descriptions of the kinetic and potential energy of objects.Which is a description of kinetic energy?
I.Water moving a waterwheel
II.A skateboarder at the top of a halfpipe
III.The blades of a fan turning
IV.Hot water molecules moving rapidly in a cup of tea
V.A parachutist ready to jump out of a plane
A) I only
B) II and V
C) II, III, and V
D) I, III, and IV
E) All of the above are descriptions of kinetic energy.

Question

Below are five descriptions of the kinetic and potential energy of objects.Which is a description of kinetic energy? ​
I.Water moving a waterwheel
II.A skateboarder at the top of a halfpipe
III.The blades of a fan turning
IV.Hot water molecules moving rapidly in a cup of tea
V.A parachutist ready to jump out of a plane
A) I only
B) II and V
C) II, III, and V
D) I, III, and IV
E) All of the above are descriptions of kinetic energy.

Quizplus · Accepted Answer

Kinetic energy is the energy of motion. I (Water moving a waterwheel) and III (The blades of a fan turning) involve motion, and IV (Hot water molecules moving rapidly in a cup of tea) involves the rapid movement of molecules, which is also a form of kinetic energy. II (A skateboarder at the top of a halfpipe) and V (A parachutist ready to jump out of a plane) describe potential energy, not kinetic.

Below Are Five Descriptions of the Kinetic and Potential Energy