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A ball falls towards the earth. Which of...

A ball falls towards the earth. Which of the following is correct?

A

if the system contains ball, the momentum is conserved

B

if the system contains earth, the momentum is conserved

C

if the system contains the ball and the earth, the momentum is conserved

D

if the system contains the ball and the earth and the sun, the momentum is conserved

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The correct Answer is:
C
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AAKASH SERIES-LAWS OF MOTION-EXERCISE - I
  1. A body is projected vertically upwards. Its momentum is gradually decr...

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  2. Assertion: A rocket moves forward by pushing the surrounding air backw...

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  3. A ball falls towards the earth. Which of the following is correct?

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  4. A man is standing in the middle of a perfectly smooth 'island of ice' ...

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  5. A block of weight W is suspended from the mid-point of a rope whose en...

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  6. Figure shows a heavy block kept on a frictionless surface and being pu...

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  7. A body of weight w1 is suspended from the ceiling of a room through a...

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  8. The apparent weight of a body

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  9. The apparent weight of a freely falling body is

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  10. A lift is ascending with a constnat speed V. A passenger in the lift d...

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  11. A block of mass m can slide on a smooth inclined plane of inclination ...

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  12. An elevator is moving vertically upward with an acceleration of g . Th...

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  13. A lift is going up with uniform velocity. When brakes are applied, it...

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  14. If the tension in the cable supporting an elevator is equal to the wei...

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  15. A relerence frame atteched to the Earth

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  16. A stationary railway platform on earth is

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  17. A rotating platform for a stationary observer outside, it is

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  18. Frames moving uniformly with respect to an inertial frame are

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  19. If particle stays at rest as seen from a frame of reference

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  20. The acceleration of a particle is found to be non zero while no force ...

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