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Work, Energy and Power Test - 27

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Work, Energy and Power Test - 27
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  • Question 1
    4 / -1
    If the K.E of a body is increased by 300%, its momentum will increase by
    Solution

  • Question 2
    4 / -1
    If the K.E. of a particle is doubled, then its momentum will
    Solution

  • Question 3
    4 / -1
    If the kinetic energy of a body increases by 0.1%, the percent increase of its momentum will be
    Solution

  • Question 4
    4 / -1
    If velocity of a body is twice of previous velocity, the kinetic energy will become
    Solution

  • Question 5
    4 / -1
    Two bodies with kinetic energies in the ratio of 4 : 1 are moving with equal linear momentum. The ratio of their masses is
    Solution

  • Question 6
    4 / -1
    A bullet is fired from a rifle. If the rifle recoils freely, then the kinetic energy of the rifle is
    Solution

  • Question 7
    4 / -1
    If the water falls from a dam into a turbine wheel 19.6 m below, then the velocity of water at the turbine is (g = 9.8 m/s2)
    Solution

  • Question 8
    4 / -1
    The decrease in the potential energy of a ball of mass 20 kg which falls from a height of 50 cm is
    Solution

  • Question 9
    4 / -1
    A 0.5 kg ball is thrown up with an initial up with an initial speed 14 m/s and reaches a maximum height of 8.0 m. How much energy is dissipated by air drag acting on the ball during the ascent
    Solution

  • Question 10
    4 / -1
    What is the velocity of the bob of a simple pendulum at its mean position, if it is able to rise to vertical height of 10 cm. (Take = 9.8 m/s2)

    Solution

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