Energy

What is the SI unit of energy?

• Newton

• Joule

• Watt

• Pascal

Which of the following types of energy is associated with an object's motion?

• Potential energy

• Chemical energy

• Kinetic energy

• Elastic energy

Which law states that energy cannot be created or destroyed but can only be converted from one form to another?

• Newton's First Law

• Law of Conservation of Energy

• Hooke’s Law

• Pascal's Law

A 50 kg object moves at a speed of 4 m/s. What is its kinetic energy?

• 100 J

• 200 J

• 400 J

• 800 J

A 2 kg object is raised to a height of 5 m. What is its gravitational potential energy? (g = 9.8 m/s²)

• 49 J

• 98 J

• 196 J

• 20 J