Work, Energy and Power

Related Questions

• A car of mass 1000 kg accelerates uniformly from rest to a velocity of 54 km/hour in 5s. The average power of the engine during this period in watts is (neglect friction)

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• In which case does the potential energy decrease

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• A metal ball of mass 2 kg moving with a velocity of 36 km/h has an head on collision with a stationary ball of mass 3 kg. If after the collision, the two balls move together, the loss in kinetic energy due to collision is

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• A position dependent force $F = 7 - 2x + 3{x^2}\,newton$ acts on a small body of mass 2 kg and displaces it from $x = 0$ to $x = 5\,m$. The work done in joules is

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• A bomb of mass 3.0 Kg explodes in air into two pieces of masses 2.0 kg and 1.0 kg. The smaller mass goes at a speed of 80 m/s.The total energy imparted to the two fragments is

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