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 ?(Take g = 10 ms^(-2))

A body of mass 1 kg is thrown upwards with a velocity 20 ms^(-1). It m

1.	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 ?(Take g = 10 ms^(-2))
Answer» 20J 30J 40J 10J Answer :A