A body falling from a vertical height of 10 m pierces through a distance of 1 m in sand. It faces and average retardation in sand. It faces an average retardation in sand equal to (g = acceleration due to gravity)

A body has a free fall from a height of 20 m. After falling through a distance of 5 m, the body would

A body moving with a kinetic energy of 6J cmes to rest at a distance of 1m due to a retarding force of

A body of mass 0.03 kg , falling from a height of 20 m, penetrates 1.5 m into the soil. Find the average resistive force of the soil.

An object falls through a distance h in certain time on the earth. The same object falls through a distance 4h in the same time on a planet. If 'g' is acceleration dur to gravity on the earth then acceleration due to gravity on that planet will be

A stone weighing 2 kg falls from the top of a tower 40 metre heigh and burries itself 1m deep in sand. The time of penetration is :

A ball is dropped from a height of 5 m onto a sandy floor and penetrates the sand up to 10 cm before coming to rest. Find the retardation of the ball in sand assuming it to be uniform.

An iron nail is dropped from a height h on the level of a sand bed. If it penetrates through a distance x in the sand before coming to rest, the average force exerted by the sand on the nail is