A block is mass `m` is dropped from the fourth of an office building and hits the sidewalk below at speed `v` . From what floor should the block the dropped to double that impact speed?

A rock is dropped from rest from a height h above the ground. It falls and hits the ground with a speed of 11 m/s. From what height should the rock be dropped so that its speed on hitting the ground is 22 m/s ? Neglect air resistance.

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 block of mass 5 kg is dropped from top of a building. Then the mamiitude of force applied by the block on the earth whne falling is :

A ball of mass m is dropped from height h on a horizontal floor which collides with it with speed u. If coefficient of restitution in floor is e, then impulse imparted to ball by the floor on its second rebounce is

A plastice ball is dropped from a height of 1m and rebounds several times from the floor. IF1.3 s elaspes from from the moment it is dropped to the second impact with the floor, what is the coefficient of restitution?

A plastic ball is dropped from a height of one meter and rebounds several times from the floor. If 1.3 seconds elapse from the moment it is dropped to the second impact with the floor, what is the coefficient of restitution.

Block A is moving away from the wall at a speed v and acceleration a.

Block A is moving away from the wall at a speed v and acceleration a.

Block A is moving away from the wall at a speed v and acceleration a.