Answer: b) a person running
Explanation:
Kinetic energy is the energy an object possesses due to its motion. When a person is running, they have kinetic energy because they are in motion.
The other options do not directly involve motion:
The best description of kinetic energy is ' a person running' because kinetic energy is the energy due to motion. The correct answer is b).
The description that most represents kinetic energy is option 'b) a person running'. Kinetic energy is the energy a body possesses due to its motion. When a person is running, they are in motion and therefore have kinetic energy. The other options correspond to different forms of energy: a ball coming to a complete stop and a ball sitting high up on a cliff involve potential energy; a bow and arrow being pulled back involves elastic potential energy, which is a form of potential energy.
For instance, in the carnival game example, the bowling ball's motion and the consequent conversion of kinetic energy into heat through kinetic friction illustrates the principle of conservation of energy. Similarly, the case of a bullet being shot into the air and the soccer balls being kicked off at different angles discuss how kinetic and potential energies transform into each other during motion.
Conservation of energy, gravitational potential energy, and the relation between a motionless wrecking ball and potential energy further explain the nuances of energy forms and transformations.
