3. Energy and Work

Conservation Of Energy — Quiz

Test your understanding of conservation of energy with 5 practice questions.

Practice Questions

Question 1

A 2 kg ball is thrown straight up with an initial speed of 4 m/s. What is its total mechanical energy at the start? (Take $g = 9.8 \, \text{m/s}^2$)

Question 2

A 1 kg object is lifted to a height of 5 m and then held at rest. What is its total mechanical energy at that height? (Take $g = 9.8 \, \text{m/s}^2$)

Question 3

A 3 kg object is moving horizontally at 3 m/s on a frictionless surface. What is its total mechanical energy?

Question 4

A 0.5 kg object is dropped from a height of 3 m. What is its total mechanical energy at the top? (Take $g = 9.8 \, \text{m/s}^2$)

Question 5

A 4 kg mass is on a frictionless surface attached to a spring. The spring is stretched, storing 32 J of potential energy. What is the total mechanical energy of the system?