Work, Energy and Power
Work, kinetic and potential energy, conservation of energy and units of energy/power.
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Take a full mock →Q1 · Work, Energy and Power · HARD
A pump raises 1000 kg of water through a height of 10 m in 20 seconds. What is the power of the pump? (Take g = 10 m/s²)
Q2 · Work, Energy and Power · MEDIUM
A body of mass 2 kg is moving with a velocity of 10 m/s. What is its kinetic energy?
Q3 · Work, Energy and Power · EASY
A force of 20 N displaces a body through 5 m in its own direction. What is the work done?
Q4 · Work, Energy and Power · EASY
A boy lifts a bag of mass 5 kg vertically upward through a height of 2 m. What is the work done by the boy against gravity? (Take g = 10 m/s²)
Q5 · Work, Energy and Power · EASY
The SI unit of power is: