Work, Energy and Power

Related Questions

• A body of mass 5 kg is placed at the origin, and can move only on the x-axis. A force of 10 N is acting on it in a direction making an angle of ${60^o}$ with the x-axis and displaces it along the x-axis by 4 metres. The work done by the force is

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• A body of mass m moving with a constant velocity v hits another body of the same mass moving with the same velocity v but in the opposite direction and sticks to it. The velocity of the compound body after collision is

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• The average power required to lift a 100 kg mass through a height of 50 metres in approximately 50 seconds would be

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• The decrease in the potential energy of a ball of mass 20 kg which falls from a height of 50 cm is

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• An inelastic ball is dropped from a height of 100 m. Due to earth, 20% of its energy is lost. To what height the ball will rise

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