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When a 40 kg boy climbs a hills , his po...

When a 40 kg boy climbs a hills , his potential energy increases by `9.8xx10^(4)` J. What is the height of the hill ?

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SL ARORA-WORK, POWER AND ENERGY-Type B
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  2. A shot travelling at the rate of 100 ms^(-1) is just able to pierce a ...

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  3. A bullet has a mass of 20 g and is moving with a speed of 1000 cms^(-1...

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  5. A light and a heavy body have equal momenta. Which one has greater K.E

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  6. A light body and a heavy body have the same kinetic energy. Which one ...

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  7. If the linear momentum of a body increases by 20%, what will be the % ...

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  8. If the kinetic energy of kinetic energy of a body increases by 300%, b...

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  9. A bomb of mass 40 kg is dropped from an aeroplane at a height of 1 km ...

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  10. A body falls on the ground from a height of 10 m and rebounds to a hei...

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  11. A body of mass 2 kg initially at rest moves under the action of an app...

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  12. A body of mass 0.3kg is taken up an inclined plane of length 10m and ...

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  13. When a 40 kg boy climbs a hills , his potential energy increases by 9....

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  14. A bob of mass 0.3 kg falls from the ceiling of an elevator moving down...

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  15. Calculate the velocity of the bob of a simple pendulum at its mean pos...

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  16. The bob A of a simple pendulum is released from a horizontal position ...

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  17. A girl of mass 40 kg sits in a swing formed by a rope of 6 m length. A...

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  18. A ball at rest is dropped from a height of 12m. It loses 25% of its ki...

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  19. A bullet of mass 0.012 kg and horizontal speed 70ms^(-1) strikes a blo...

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  20. A 1 kg mass on a floor is connected to a 2 kg mass by a string passing...

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