Two identical 5 kg blocks are moving with same speed of `2m//s` towards eachother along a frictionless horizontal surface. The two blocks collide, stick together and come to rest. Consider the two blocks as a system. Caluculate work done by (i) external forces (ii) internal forces.

Two identical 5 kg blocks are moving with same speed of 2 m//s towards each other along a frictionless horizontal surface . The two blocks collide , stick together and come to rest. Consider the two blocks as a system . The work done by the external and ijnternal force are respectively:

Two identical 5kg blocks are moving with same speed of 2ms^-1 towards each other along a frictionless horizontal surface. The two blocks collide, stick together, and come to rest. Consider the two blocks as a system. The works done by external and internal forces are, respectively,

Two identical bodies of mass 4 kg each are approaching each other with a speed of 3 m/s , on a frictionless horizontal surface . When the two bodies collide , they stick together and come to rest . Calculate the work done by the external forces and internal forces on the system of blocks .

(a) Can a body with negative energy have momentum ? (b) Two bodies having identical masses of 2 kg are moving towards each ther with same speed of 3 m/s along frictionless horizontal surface . The bodies stick together and come to rest . calculate the work done by external and internal forces on combined system of these two bodies . (c ) Can a body have energy without momentum ?

A 16kg block moving on a frictionless horizontal surface with a velocity of 4m//s compresses an ideal spring and comes to rest. If the force constant of the spring be 100N//m , then how much is the spring commpressed ?

A block of mass 1 kg moving with a speed of 4 ms^(-1) , collides with another block of mass 2 kg which is at rest. The lighter block comes to rest after collision. The loss in KE of the system is

Two block of masses 3kg and 1kg are kept in contact with rach other on a frictionless horizontal surface.If a force of 10N is applied on the larger block what is the acceleration of the system? What is the contact force between the two blocks?

Two blocks of masses 3kg and 1kg are kept in contact with each other on a frictionless horizontal surface.If a force of 10N is applied on the larger block,what is the acceleration of the system? What is the contact force between the two blocks?

Two block , with masses m_(1) and m_(2) are staked as shown in fig and placed on a frictionless horizontal surface . There is a friction between the two block .An external force of magnitude F is applied to the top block at an angle alpha below the horizontal . The coefficient of friction between m_(1) and m_(2) are mu_(s) b. If the two blocks move together, find their acceleration b . Calculate the maximum value of force so that blocks will move together