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If the speed of body is halved, what wil...

If the speed of body is halved, what will be the change in its kinetic energy?

A

1/4 times

B

1/6 times

C

1/8 times

D

1/10 times

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The correct Answer is:
A
NA
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LAKHMIR SINGH & MANJIT KAUR-WORK AND ENERGY-Exercise
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  2. What do you mean by kinetic energy ? Derive an expression for the kine...

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  3. If the speed of body is halved, what will be the change in its kinetic...

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  4. On what factors does the kinetic energy of a body depend ?

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  5. Which would have a greater effect on the kinetic energy of an object :...

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  6. How fast should a man of 50 kg run so that his kinetic energy be 625 J...

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  7. State whether the following objects possess kinetic energy, potential ...

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  8. two bodies A and B of equal masses are kept at heights of h and 2h res...

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  9. What is the kinetic energy of a body of mass 1 kg moving with a speed ...

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  10. Is potential energy a vector or scalar quantity ?

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  11. A load of 100 kg is pulled up by 5 m. Calculate the work done. (g = 9....

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  12. State whether the following statement is true or false : The potenti...

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  13. What happens to the potential energy of a body when its height is dou...

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  14. What kind of energy is possessed by the following ? (a) A stone kept...

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  15. Fill in the following blank with suitable words: (a) Work is measure...

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  16. What are the quantities on which the amount of work done depends ? How...

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  17. Is it possible that a force is acting on a body but still the work don...

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  18. A boy throws a rubber ball vertically upwards. What type of work, posi...

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  19. Write the formula for work done on a body when the body moves at an an...

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  20. How does the kinetic energy of a moving body depend on its (i) speed, ...

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