Adaptive Practice
Energy
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Easy
What is the SI unit of energy?
Easy
Which form of energy is stored due to an object's position?
Medium
A 2 kg object is lifted to a height of 5 m. What is its potential energy? (Take g = 9.8 m/s²)
Easy
Which of the following is an example of kinetic energy?
Medium
The work done in lifting a 10 kg mass by 2 m is 196 J. What is the acceleration due to gravity used?
Easy
Which law states that energy can neither be created nor destroyed, only transformed?
Medium
A pendulum bob of mass 0.5 kg is raised to a height of 0.8 m. What is its potential energy at this height? (g = 9.8 m/s²)
Medium
Which of the following is NOT a renewable source of energy?
Hard
If the kinetic energy of a moving object doubles, by what factor does its velocity change?
Medium
A spring with spring constant k is compressed by x meters. What is the expression for the elastic potential energy stored in the spring?