Adaptive Practice
Energy, Work and Power
10 questions • Earn up to 95 XP • First attempt — go for 100%!
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Question 1 of 10
⏱ 0:30
Easy
What is the SI unit of work?
Easy
Which of the following is an example of work done?
Easy
If a force of 10 N moves an object by 5 meters in the direction of force, what is the work done?
Easy
Power is defined as:
Easy
A machine does 200 J of work in 4 seconds. What is its power output?
Medium
Which of the following statements is true about kinetic energy?
Medium
An object of mass 2 kg is moving with a velocity of 3 m/s. Calculate its kinetic energy.
Medium
Which of the following devices converts electrical energy into mechanical energy?
Hard
If a person lifts a 50 kg sack to a height of 2 m in 5 seconds, what is the power exerted? (Take g = 10 m/s²)
Easy
Which of the following is NOT a form of energy?