A man whose mass is m kg jumps vertically into air from a sitting position in which his centre of mass is at a height `h_(1)` from the ground. When his feet are just about to leave the ground his centre of mass is `h_(2)` from the ground and finally rises to `h_(3)` when he is at top of the jump . What is the average upwards force exerted by the ground on him ?

A man whose mass is m kg jumps vertically into air from the sitting position in which his centre of mass is at a height h_(1) from the ground. When his feet are just about to leave the ground his centre of mass is at height h_(2) from the ground and finally centre of mass rises to h_(3) above the ground when he is at the top of the jump. what is the average upward force exerted by the ground on him?

A man whose mass is m kg jumps vertically into air from the sitting position in which his centre of mass is at a height h_(1) from the ground. When his feet are just about to leave the ground his centre of mass is at height h_(2) from the ground and finally centre of mass rises to h_(3) above the ground when he is at the top of the jump. what is the average upward force exerted by the ground on him?

A 60 kg man leaps vertically from a crouching position when his centre of mass is 40 cm above the ground. As his feet leave the floor his centre of mass is 90 cm above the ground and rises to 120 cm at the top of his leap. Calculate up upward froce, assumed constant, that the ground exerts on the man. [Hint : Human body is a system of particles]

A block of mass m is dropped from height h above the ground. Find out the speed of the block when it reaches the ground.

A ball is thrown vertically upward with a speed v from a height h above the ground . The time taken for the ball to hit the ground is

A parachutist flying in an aeroplane jumps when it is at a height of 3 km above ground. He opens his parachute when he is about 1 km above ground. Describe his motion.

A ball of mass m falls vertically to the ground from a height h_1 and rebound to a height h_1 and rebound to a height h_2 . The change in momentum of the ball on striking the ground is.

A body of mass m=2kg falls from a height h=10m from the ground level . What is the magnitude of total change in momentum of the body before it strikes the ground?