Question

When a body falls freely towards the earth, then its total energy:

• A. Increases
• B. Decreases
• C. Remains constant
• D. first increases and then decreases

Answer 1

The correct option is C

Remains constant

1. According to the law of conservation of energy, energy can neither be created nor destroyed.
2. The energy can only be transformed from one form to another.
3. The total energy of an isolated (closed) system, thus remains constant.
4. Since the total energy always remains constant, the total energy when a body falls freely towards the earth remains the same.

Hence, the correct option is C.