Kinetic and Potential Energy Quiz

What is the unit of energy?

• Newton

• Watt

• Pascal

• Joule

Which of the following is true about kinetic energy?

• It is a vector quantity.

• It is directly proportional to the square of the velocity.

• It is inversely proportional to the velocity.

• It is independent of the mass of the object.

If a ball of mass 0.2 kg is moving at 7.5 m/s, what is its kinetic energy?

• 5.625 J

• 15 J

• 7.5 J

• 10 J

Which of the following is a scalar quantity?

• Force

• Kinetic energy

• Acceleration

• Velocity

What is potential energy?

• Energy due to temperature

• Energy due to position or configuration

• Energy due to motion

• Energy due to chemical reactions

Which of the following is an example of gravitational potential energy?

• A moving car

• Water at the top of a waterfall

• A compressed spring

• A spinning wheel

How is potential energy calculated for an object raised to a height?

• PE = m * v^2

• PE = 1/2 * m * v^2

• PE = m * a * s

• PE = m * g * h

What is the total mechanical energy of a body?

• The ratio of kinetic energy to potential energy

• The sum of kinetic energy and potential energy

• The difference between kinetic energy and potential energy

• The product of kinetic energy and potential energy

In a freely falling body, what happens to the potential energy as it falls?

• It increases

• It decreases

• It remains constant

• It becomes zero

What is the relationship between kinetic energy and potential energy in a closed system?

• They are always equal

• Their sum is constant

• Kinetic energy is always greater

• Potential energy is always greater