How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm ? Take its downward acceleration to be `10 ms ^(-2)`.

A mass of 10 kg is dropped form a height of 50 cm. Find its potential energy just before dropping.

The linear momentum of an object of mass 2 kg is 10 kg ms^-1 . The velocity of the object is

A mass of 10 kg is dropped form a height of 50 cm. Find its kinetic energy just on touching the ground.

A mass of 10 kg is dropped form a height of 50 cm. Find its velocity with which it hits the ground.

The power of a motor pump is 5 kW. How much water per minute the pump an raise to height of 20 m ? Take g = 10ms ^-2 .

An object of mass 2 kg falls with a acceleration of 9.8 ms^-2 towards the gorund. With acceleration will an object of mass 4 kg fall?

If a man lifts a load up with the help of rope such that it raises the load of mass 50 kg to a height of 20 m in 100 seconds. Find the power of man. (Take g = 10ms^-2 )

In a shotput event an athlete throws the shotput of mass 10 kg with an initial speed fo 1 ms^-1 at 45^@ from a height 1.5 m above ground. Assuming air resistance to be negligible and acceleration due to gravity to be 10 ms^-2 , the kinetic energy of the shotput when it jst reaches the ground wil be