Question: What is the kinetic energy of an object with a mass of 2 kg moving at a speed of 3 m/s?

Options:

1. 9 J
2. 6 J
3. 3 J
4. 0 J

Correct Answer: 9 J

Solution:

Kinetic energy is calculated as KE = 0.5 * m * v². Here, KE = 0.5 * 2 kg * (3 m/s)² = 9 J.