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Kinetic energy, with any reference, must...

Kinetic energy, with any reference, must be

A

negative

B

zero

C

positive

D

both (2) and (3)

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-WORK POWER ENERGY-EXERCISE - 1A
  1. A car of mass .m. starts from rest and accelerates so that the instant...

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  2. A particle of mass .m. is driven by a machine that delivers constant p...

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  3. Kinetic energy, with any reference, must be

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  4. Which of the following is a non - conservative force ?

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  5. A molecule of mass m of an ideal gas collides with the wall of a vesse...

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  6. If a spring extends by x on loading, then energy stored by the spring ...

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  7. A bullet is fired from a rifle. If the rifle recoils freely, then the ...

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  8. A boy carrying a box on his head is walking on a level road from one p...

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  9. Identify the false statement from the following.

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  10. The balades of a windmill sweep out a circle of area A. If the wind fl...

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  11. A particle with total energy E is moving in a potential energy region ...

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  12. A particle is acted upon by a force of constant magnitude which is alw...

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  13. A particle of mass m moving with velocity v collides with a stationary...

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  14. Two spheres A and B collide. If the momentum of A is doubled in the co...

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  15. Internal force can change

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  16. In head on elastic collision of two bodies of equal mass

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  17. Two bodies A and B of masses m(1) and m(2) moving with velocities V(1)...

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  18. Two particles of equal masses have an elastic collision, the target pa...

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  19. A heavier sphere moving eastward with a certain velocity .v. collides ...

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  20. . A bullet hits a block at rest on a frictionless horizontal surface a...

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