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A ball hits the floor and rebounds after...

A ball hits the floor and rebounds after an inelastic collision. In this case

A

the momentum of the ball just after the collision is the same as the just before the collision

B

the mechanical energy of the ball remains the same in the collision

C

the total momentum of the ball and earth is conserved

D

the total energy of the ball and the earth is conserved

Text Solution

Verified by Experts

The correct Answer is:
C
The ball & the earth froms a system and no external force acts on it. Hence total momentum remains constant.
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ALLEN -CENTRE OF MASS-EXERCISE-I
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  2. A shell is fired vertically upwards with a velocity v(1) from the deck...

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  3. A shell is fired from a cannon with a velocity v (m//sec.) at an angle...

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  4. A ball hits the floor and rebounds after an inelastic collision. In th...

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  5. Three balls A, B and C are placed on a smooth horizontal surface. Give...

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  6. A body of mass 1 kg strikes elastically with another body at rest and ...

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  7. A small bucket of mass M kg is attached to a long inextensible cord of...

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  8. In the figure shown, a particle P strikes the inclined smooth plane ho...

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  10. A body of mass 2 kg is projected upward from the surface of the ground...

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  11. A ball of mass 1 kg strikes a heavy platform, eleastically, moving upw...

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  12. Two paricles of equal mass m go round a circle of radius R under the a...

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  13. Two objects move in the same direction in a straight line. One moves w...

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  14. A uniform rope of linear mass density lambda and length l is coiled on...

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  15. A 10 g rubber ball and a 10g clay ball are each thrown at a wall with ...

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  16. Two friends are sitting in a stationary boat. At t = 30s the person at...

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  17. Two blocks, with masses m(1) 2.5 kg and m(2) = 14 kg, approach each ot...

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  18. A small puck is sliding to the right with momentum vec(P)(1) on a hori...

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  19. A smooth sphere is moving on a horizontal surface with velocity vector...

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  20. A moving 2 kg ball with a speed of 2 ms^(-1) hits obliquely a stationa...

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