Work, Energy and Power

Related Questions

• In the elastic collision of objects

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• A particle of mass m at rest is acted upon by a force F for a time t. Its Kinetic energy after an interval t is

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• A body of mass 3 kg is under a force, which causes a displacement in it is given by $S = \frac{{{t^3}}}{3}$ (in m). Find the work done by the force in first 2 seconds

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• A body of mass m kg is lifted by a man to a height of one metre in 30 sec. Another man lifts the same mass to the same height in 60 sec. The work done by them are in the ratio

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• At high altitude, a body explodes at rest into two equal fragments with one fragment receiving horizontal velocity of 10 m/s. Time taken by the two radius vectors connecting point of explosion to fragments to make 90° is

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