When a man jumps down from a height of several storeys onto a stretched trapaulin , he receives no injury . Why ?

If a man jumps out from a boat, the boat moves backwards. Why?

When a person is suffering from severe cold, he or she cannot

A thief stole a box full of valuable articles of weight W and while carrying it on his back, he jumped down a wall of height ‘ h ’ from the ground. Before he reached the ground he experienced a load of

If a man of mass M jumps to the ground from a height h and centre of mass moves a distance x in time taken by him to hit the ground, show that the average force acting on him is Mgh//x .

The acceleration due to gravity on the moon is 1//6th of that on the earth. If a man can jump upto a height of 1 m on the surface of the earth, how high he can jump on the surface of the moon ?

A 93 kg man lowers himself to the grouund from a height of 10.0 m by holding onto a rope that runs over a frictionless pulley to a 65 kg sandbag. With runs over a frictionless pylley to a 65 kg sandbag. With what speed does the man hit the ground if he started from rest ?

A ball is projected vertically down with an initial velocity from a height of 20 m onto a horizontal floor. During the impact it loses 50% of its energy and rebounds to the same height. The initial velocity of its projection is