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Two objects having same mass 'm' are mov...

Two objects having same mass 'm' are moving with velocities v and 2v. Find ratio of their kinetic energies.

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MBD-WORK, ENERGY AND POWER-Example
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  2. Two masses m and 2m are dropped from height h and 2h. On reaching the ...

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  3. Two objects having same mass 'm' are moving with velocities v and 2v. ...

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  6. An electric heater of 1000W is used for 2 hours a day. What is the cos...

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  7. The power of a motor pump is 5 kW. How much water per minute the pump ...

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  8. Calculate the electricity bill amount for the month of November of a f...

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  9. A person carrying 10 bricks each of mass 2.5 kg. on his head moves to ...

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  10. A car of 1000 kg moving with a velocity of 30 m//s stops with uniform ...

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  11. A car is moving with a speed of 54 km//h. What will be the kinetic ene...

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  12. 1 Joule of energy is used for one heart beat. Calculate the power of t...

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  13. State the relation between commercial unit of energy and joules.

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  14. How much work is done on a body of mass 1 kg whirling on a circular pa...

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  15. What is the SI unit of power ?

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  16. A ball is thrown vertically upwards. Its velocity keeps on decreasing....

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  17. If the heart works 60 joules in one minute, what is its power ?

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  18. Name the term used for the sum of kinetic energy and potential energy ...

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  19. How many joules are present in 1 kilowatt hour?

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  20. What should be the change in velocity of a body required to increase i...

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