A steel ball of radius `2 cm` is initially at rest. It is struck head on by another stell ball of radius `4 cm` travelling with a velocity of `81 cm//s`. The common velocity if it is perfectly inelastic collision.

A steel ball of radius 2 cm is initially at rest. It is struck head on by another stell ball of radius 4 cm travelling with a velocity of 81 cm//s . If the collision is elastic their respective final velocities are

A steel ball of radius 2cm is initially at rest.It is stuck head on by another steel ball of radius 4cm moving with a velocity of 0.72ms^-1.Assuming that the collosion in completely inceelastic.Calculate the velocity of the balls after collision.

A steel ball of mass m is initially at rest on a horizontal frictionless surface. It is struck head on by another steel ball of mass 2m travelling with a velocity of 50 cm/s. Calculate the velocities of the two balls after a collision assuming it to be elastic.

A steel ball of radius 2 cm is at rest on a frictionless surface. Another ball of radius 4 cm moving at a velocity of 81 cm//see collides elast cally with first ball. After collision the smaller ball moves with speed of

The speed of a ball of radius 2 cm in a viscous liquid is 20 cm/s. Then the speed of ball of radius I cm in the same liquid is

The speed ofa ball ofradius 2 cm in a viscous liquid is 20 cm/s. Then the speed of ball of radius I cm in the same liquid is

Radius of an iron is 2 cm. The ball is kept at rest on a frictionless horizontal surface. Another ball of radius 4 cm ,moving with velocity 81 cm*s^(-1) , collides with it. Find the velocities of both the balls after collision.

A solid metal ball of radius 8 cm is melted and cast into smaller balls, each of radius 2 cm. The number of such balls is

The speed of a ball of radius 2 cm in a viscous liquid medium is 20 cm . S^(-1) . The speed of a ball of radius 1 cm in the same liquid will be