An unruly demonstrator lift a stone of mass `m` kg from the ground and throws it at this opponent. At the time of projection, the stone is at height `h` meter above the ground and has a speed of `v(m)//(s)` what horse power does he use?

An unruly demonstrator lifts a stone of mass 200 g from the ground and throws it at his opponent. At the time of projection, the stone is 150 cm above the ground and has a speed of 3.00 m/s. Calculate the work doe by the demonstrator during the process.

An unruly demonstrator lifts a stone of mass 200 g from the ground and throuws it at his opponent. At the time of projection, the stone is 150 cm above the grond and has a speed of 3.00 m/s. Calculate the work doe by the demonstrator during the process. If it takes one second for the demonstrator tolift teh stone and throw, what horsepower does he use?

A person lifts a stone of mass 100 g from the ground to a height of 1.5 m and projects it with a speed 4 m/s . If the process takes 1.5 s then calculate power of the person .

A stone of mass 1 kg falls to the earth from a height of 10 m. The kinetic energy of the stone when it is 4 m above the ground is

A stone of mass 1 kg falls to the earth from a height of 10 m. The kinetic energy of the stone when it is 4 m above the ground is:

A stone is dropped from the top of a 400 m high tower. At the same time another stone is projected vertically upwards from the ground with a speed of 50 m//s . The two stones will cross each other after a time

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 stone is allowed to fall from the top of a tower 300 m height and at the same time another stone is projected vertically up from the ground with a velocity 100 m//s . Find when and where the two stones meet?