Work, Energy and Power

Related Questions

• An engine pumps up 100 kg of water through a height of 10 m in 5 s. Given that the efficiency of the engine is 60% . If $g = 10m{s^{ - 2}}$, the power of the engine is

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• A light and a heavy body have equal kinetic energy. Which one has a greater momentum ?

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• A body of mass ${m_1}$ moving with a velocity 3 ms–1 collides with another body at rest of mass ${m_2}.$After collision the velocities of the two bodies are 2 ms–1 and 5ms–1 respectively along the direction of motion of ${m_1}$ The ratio ${m_1}/{m_2}$ is

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• If the increase in the kinetic energy of a body is 22%, then the increase in the momentum will be

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• Power of a water pump is 2 kW. If $g = 10\,m/{\sec ^2}$, the amount of water it can raise in one minute to a height of 10 m is

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