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If momentum is increased by 20% then K.E...

If momentum is increased by `20%` then K.E. increases by

A

0.4

B

0.36

C

0.18

D

0.08

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SL ARORA-Work, Energy and power-EXERCISE
  1. Two bodies of masses m and 4 m are moving with equal K.E. The ratio of...

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  2. Two bodies A and B having mass m and M respectively ppossess same kine...

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  3. If momentum is increased by 20% then K.E. increases by

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  4. If momentum is increased by 20% , then K.E. increase by

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  5. A body of mass 10 kg initially at rest acquires velocity 10 ms^(-1). W...

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  6. How much work must work be done by a force on 50 kg body in order to a...

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  7. A taxi without any passengers, moving on a frictionless horizontal roa...

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  8. If the potential energy between two molecules is given by U= -(A)/(r^6...

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  9. The potential energy of a particle of mass 5 kg moving in the x-y plan...

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  10. A simple pendulum hanging freely and at rest is vertical because in th...

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  11. A pendulum of length 2 m lift at P . When it reaches Q , it losses 10%...

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  12. A pendulum bob on a 2 m string is displaced 60^(@) from the vertical a...

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  13. 300J of work is done in slinding a 2 kg block up an inclined plane of ...

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  14. A body, thrown upward with some velocity reaches the maximum height of...

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  15. A uniform rope of total length l is at rest on a table with fraction f...

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  16. The dimensions of K in the equation W=1/2Kx^(2) is

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  17. The work done by the external agent in stretching a spring of force co...

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  18. A spring of force constant 800N//m has an extension of 5cm. The work d...

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  19. Two springs of spring constants 1500N//m and 3000N//m respectively are...

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  20. When a spring is stretched by 2 cm, it stores 100 J of energy. If it i...

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