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The diameter of an iron sphere of mass 1...

The diameter of an iron sphere of mass 10 kg is same as that of aluminium sphere of mass 3.5 kg. Both of them are made to fall freely simultaneously from the top of a tower. When both of them would be at 10 m above the ground, they would have same ………….

A

acceleration

B

momentum

C

potential energy

D

kinetic enery

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The correct Answer is:
A, C

Their acceleration would be equal to gravitational acceleration .g..
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KUMAR PRAKASHAN-WORK AND ENERGY -QUESTION & ANSWER (CHOOSE THE CORRECT OPTION FROM THOSE GIVEN BELOW EACH QUESTION)
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  2. What is power?

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  10. A body is thrown up with a kinetic energy of 10 J. If it attains maxim...

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  11. If an object is falling freely from certain height towards the surface...

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  12. The work done on the object is negative, then the measure of angle bet...

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  13. The diameter of an iron sphere of mass 10 kg is same as that of alumin...

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  14. A girl is carrying a school bag of 3 kg mass on her back and moves 200...

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  15. Which of the following is not the unit of energy?

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  16. Work done on an object is not dependent on ………..

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  17. Water stored in the dam ………..

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  18. A body is falling freely from a height h. When it covers distance (h)/...

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  19. A boy lifts a mass of 300g for 1.2 second at height of 4m. What would ...

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  20. ("1 megawatt (MW)")/("1 kilowatt (kW)")=…………..

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