Work, kinetic and potential energy, conservation of energy and units of energy/power.
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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 · MEDIUM
A block of mass 2 kg slides down a frictionless inclined plane of height 5 m. At the bottom, it compresses a spring of spring constant 400 N/m. What is the maximum compression of the spring? (Take g = 10 m/s²)