Work, Energy and Power

Related Questions

• A body moving with velocity v has momentum and kinetic energy numerically equal. What is the value of v

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• A machine which is 75 percent efficient, uses 12 joules of energy in lifting up a 1 kg mass through a certain distance. The mass is then allowed to fall through that distance. The velocity at the end of its fall is (in $m{s^{ - 1}})$

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• A bomb of 12 kg divides in two parts whose ratio of masses is 1 : 3. If kinetic energy of smaller part is 216 J, then momentum of bigger part in kg-m/sec will be

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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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• A force $\vec F = (5\hat i + 4\hat j)$ N acts on a body and produces a displacement $\vec S = (6\hat i - 5\hat j + 3\hat k)$m. The work done will be

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