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A body of mass 1 kg is thrown upwards with a velocity 20 ms^-1 . It momentarily comes to rest after attaining a height of 18 m.

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A body of mass 1 kg is thrown upwards with a velocity 20 ms-1 . It momentarily comes to rest after attaining a height of 18 m. How much energy is lost due to air friction?

(a) 20 J 

(b) 30 J 

(c) 40 J

(d) 10 J

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1 Answer

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by (48.6k points)

Correct answer is (a) 20 J

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