Adaptive Practice
Work, Energy and Power
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Question 1 of 10
⏱ 0:30
Easy
What is the SI unit of work?
Easy
A force of 10 N acts on an object and moves it by 5 m in the direction of the force. Calculate the work done.
Medium
Which of the following statements is true about conservative forces?
Easy
A body of mass 2 kg is moving with a velocity of 3 m/s. Calculate its kinetic energy.
Easy
The potential energy of an object is zero at the ground level. What is the potential energy of a 5 kg object lifted to a height of 10 m? (Take g = 9.8 m/s²)
Medium
If the velocity of a moving object is doubled, its kinetic energy becomes:
Easy
Power is defined as:
Easy
A machine does 500 J of work in 10 seconds. What is its power output?
Hard
A block is pulled up a frictionless inclined plane of length 10 m and height 6 m with a force equal to its weight. Calculate the work done by the force.
Medium
Which of the following is NOT a form of mechanical energy?