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The kinetic energy of a particle continu...

The kinetic energy of a particle continuously increases with time.
a) The resultant force on the particle must be parallel to the velocity at all instants
b) The resultant force on the particle must be at an angle less than 90o all the time
Its height above the ground level mus continuously decrease
The magnitude of its linear momentum is increasing continuously

A

a, b are correct

B

b, c are correct

C

a, d are correct

D

b, d are correct

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-WORK, POWER & ENERGY -EXERCISE - I
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  4. The kinetic energy of a particle continuously increases with time. ...

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  5. One end of a light spring of spring constnat k is fixed to a wall and ...

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  6. Statement A: An engine A can perform a given work in 1 hr and engine B...

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  7. . Statement A: Energy is the cause for doing work and work is the effe...

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  8. (A): A spring has potential energy, both when it is compressed or stre...

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  9. A) When a body slides on rough surface, its momentum is not conserved....

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  10. A) Collision doesn.t require physical contact B) Collision between ...

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  11. A) For any collision, momentum transfer takes place. B) In any colli...

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  12. (A): Collision between two fundamental particles is elastic (R) : Fu...

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  13. A) When external forces are involved, momentum of the system is not co...

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  14. A) When a ball hits a wall (stationary) it returns back with same velo...

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  15. For a system to follow the law of conservation of linear momentum duri...

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  16. Consider the following statements A and B. Identify the correct choice...

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  17. . (A): Comets move around the sun in elliptical orbits. The gravitatio...

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  18. . A sphere A moving with a speed .U. and rotating with an angualr velo...

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  19. A body is in motion and it is stopped by applying retarding force. Ini...

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  20. (A): When two bodies of equal masses collide, their veloctities are al...

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