A body of mass 1 kg of thrown upwards with a velocity 20 m/s. It momentarily comes to rest after attaining a height of 18m. How much energy is lost due to air friction ? (g=10m/s^2)

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A body of mass 1 kg of thrown upwards with a velocity 20 m/s. It momentarily comes to rest after attaining a height of 18m. How much energy is lost due to air friction ? (g=10m/s^2)
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A body of mass 1 kg of thrown upwards with a velocity 20 m/s. It momentarily comes to rest after attaining a height of 18m. How much energy is lost due to air friction ? (g=10m/s^2) A body of mass 1 kg of thrown upwards with a velocity 20 m/s. It momentarily comes to rest [...]
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