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A 200 g ball falls from rest through air...

A 200 g ball falls from rest through air. If its speed is 10 m/s after having through a distance of 20m, how much energy was lost due to friction against air?

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BINA LIBRARY-WORK,ENERGY AND POWER-EXERCISE
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  2. Two bodies having masses 1g and 4g are moving with equal K.E find the ...

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  3. A 200 g ball falls from rest through air. If its speed is 10 m/s after...

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  4. A bullet of mass 100 g strikes a wooden plank with a velocity of 300ms...

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  5. A force of 100 dynes acts on a particle of mass 0.5 kg for 10 sec. Cal...

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  6. An engine lifts 200kg of metal to a vertical height of 30 m in one min...

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  14. A body constrained to move in y directions is sunjected to a force F=(...

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  15. The K.E acquired by a mass m travelling a certain distance d starting ...

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  16. A 4 kg mass and a 1 kg mass are moving with equal K.E.The ratio of the...

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  17. If the momentum of a body increases by 50%,its K.E,increases by

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  18. A ball whoes K.E is K is projected at an angle 45° to the horizental.T...

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  19. A stationary particle explodes into two particle of masses m1 and m2 ...

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  20. Two bodies with K.E in ratio 4:1 are moving with equal linear momentum...

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