Question

will a man came from sky with the same speed without parachute.explain

Answer 1

NO, the man is under free fall condition,Every instant its potential energy is decreasing which is getting converted into kinetic energy and mass being constant speed increases and has max speed at the moment the person touch the ground.

Answer 2

As the man is in free fall due to gravity he will attain maximum speed and he will strike ground at a maximum speed and also he may die so a sky diver always takes a parachute so he will not attain max speed and so he can reach the ground at at very low speed so that he is safe also diving from a great height