A body of mass 1 kg is thrown upwards with a velocity 20 
. It momentarily comes to rest after attaining a height of 18 m. How much energy is lost due to air friction? 
Text Solution
Verified by ExpertsThe correct answer is:
D
: Initial velocity 
kg
Kinetic energy 
maximum potential energy
Initial kinetic energy 
J.
The height travelled by the body, 
Loss of energy due to air friction 
Energy lost 
J.
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