# GENERAL KNOWLEDGE

## GK

### GENERAL SCIENCE

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following best describes the energy of a ball as it bounces up and down?
 A Potential Energy and Kinetic energy change at the same time B Potential Energy increases as it moves down C Kinetic energy increases as it moves up D Potential Energy and Kinetic energy remains the same
Explanation:

Detailed explanation-1: -The answer is C. The total amount of mechanical energy is conserved in free-fall situations (no external forces doing work). Thus, the potential energy that is lost is transformed into kinetic energy.

Detailed explanation-2: -Elastic potential energy is what causes a ball to bounce, or rebound, because it is transformed into kinetic energy, which is then used to bring the ball back up.

Detailed explanation-3: -During a collision, some of the ballâ€™s energy is converted into heat. As no energy is added to the ball, the ball bounces back with less kinetic energy and cannot reach quite the same height.

Detailed explanation-4: -The ball gains energy of motion, known as kinetic energy.

There is 1 question to complete.