Question

If a body falls freely towards the Earth, then the total energy:

• A. increases then decreases
• B. increases
• C. remains constant
• D. decreases

Answer 1

The correct option is C remains constant

According to the law of conservation of energy, the total energy of a system will always remain constant.

Initially, the body is having only potential energy. As it falls down its potential energy decreases but its kinetic energy increases because of its increasing speed but the sum of its kinetic energy and potential energy i.e. its total energy remain constant.