Work, Energy and Power

Related Questions

• The kinetic energy of a body of mass 3 kg and momentum 2 Ns is

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• A man does a given amount of work in 10 sec. Another man does the same amount of work in 20 sec. The ratio of the output power of first man to the second man is

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• A tennis ball dropped from a height of 2 m rebounds only 1.5 m after hitting the ground. What fraction of its energy is lost in the impact

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• Two bodies having same mass 40 kg are moving in opposite directions, one with a velocity of 10$m/s$ and the other with $7m/s.$ If they collide and move as one body, the velocity of the combination is

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• A 60 kg man runs up a staircase in 12 seconds while a 50 kg man runs up the same staircase in 11, seconds, the ratio of the rate of doing their work is

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