Question

A car is going downhill with increasing speed. What happens to kinetic energy and potential energy.

• A. Both increases
• B. both decrease
• C. PE increases KE decreses
• D. KE increases and PE decreases

Answer 1

The correct option is D

KE increases and PE decreases

Correct option is D: KE increases and PE decreases

Explanation:

1. The determining factors for kinetic energy are Speed or velocity and mass.
2. Potential energy the determining factors are Height or distance, mass, and acceleration due to gravity.
3. As the total energy is always constant as per the law of conservation of energy.
4. So Kinetic energy will increase and potential energy will decrease.
5. As Kinetic depends on speed.

Hence, correct option is D: KE increases and PE decreases