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Two identical balls each moving with speed v At right angle to each other collide perfectly inelastically. Their speed after collision is

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Important Questions on Work, Energy and Power

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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>EXERCISE>Q 26
A body of mass m moving with a constant velocity collides head on with another stationary body of same mass. If the coefficient of restitution between the bodies is 12 then ratio of velocities of two bodies after collision will be
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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 1

If a block of mass 2 kg is displaced by 10 m towards right by the application of force F, as shown in figure, then work done by force F is

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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 2
If a body is dropped from building, then work done by gravitational force is
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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 3
Which of the following statement is incorrect about kinetic energy?
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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 4
Work done by friction is
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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 5
The force acting on a body moving along x-axis is F=3x2N. The work done required to move it from x=0 to x=3 m is
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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 6
If a body of mass 2 kg moving with constant velocity 2 m s-1, then the kinetic energy of the body is
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Gamma Question Bank for Medical Physics>Chapter 6 - Work, Energy and Power>Assignment>Q 7
If the momentum of the body is increased by 20%, then percentage increase in its kinetic energy of the body is