Question

In which case will the potential energy decrease?

Options

• Compressing a spring.

• Stretching a spring.

• Moving a body against gravitational pull.

• A bus descending down a steep hill.

Answer 1

A bus descending down a steep hill.

Explanation:

Gravitational potential energy is U = mgh; it decreases when height decreases. A bus descending a steep hill loses gravitational potential energy. Compressing or stretching a spring increases elastic potential energy, and moving against gravity increases gravitational potential energy.