What is the formula for kinetic energy — select the correct answer.

✅ D. Reflection

Reflection is the return of light from a surface. Read more

✅ C. Voltmeter

A voltmeter measures potential difference. Read more

✅ B. Convex lens

A convex lens is thicker at the center and converges parallel light rays. Read more

✅ B. Newton's third law

Newton's third law describes action and reaction forces. Read more

✅ C. Reflection

Reflection is the return of light from a surface. Read more

✅ C. Energy

The joule is the SI unit of energy and work. Read more

✅ A. 9.8 m/s²

Near Earth's surface, gravitational acceleration is approximately 9.8 m/s². Read more

✅ B. Ohm

Electrical resistance is measured in ohms. Read more