Understanding the concept of collisions

A body of mass 1 kg is thrown upwards with a velocity of 20 m/s. It momentarily comes to rest after attaining a height of 18 m. How much energy is lost due to air friction? Take  

On a frictionless surface, a block of mass M moving at speed v collides elastically with another block of the same mass M which is initially at rest. After the collision, the first block moves at an angle  to its initial direction and has a speed . The second block’s speed after the collision is__

A body of mass m moving with velocity v collides head-on with another body of mass 2m which is initially at rest, the ratio of K.E of colliding body before and after the collision will be __

A metal ball of mass 2 kg moving with a speed of 36 km/h has a head-on collision with a stationary ball of mass 3 kg. If after the collision, both the balls move as a single mass, then the loss in kinetic energy due to collision is__

The principle of conservation of linear momentum can be strictly applied during a collision between two particles provided the time of impact is__

A body of mass 4m is lying in the X-Y plane at rest. It suddenly explodes into three pieces. Two pieces, each of mass m move perpendicular to each other with equal speeds v. The total kinetic energy generated due to explosion is__

A body of mass M collides against a wall with a velocity V and retraces its path with the same speed. The change in momentum is __ (take the initial direction of the velocity as positive)

Two identical balls A and B having velocities of 0.5 m/s and -0.3 m/s respectively collide elastically in one dimension. The velocities of the B and A after collision respectively will be__

A lead ball strikes a wall and falls down, a tennis ball having the same mass and velocity strikes the wall and bounces back. Check the correct statement.

During inelastic collision between two bodies, which of the following quantities always remain conserved?

When two balls at the same temperature collide. What is conserved?

A bullet of mass 0.012 kg and horizontal speed of 70 m/s strikes a block of wood of mass 0.4 kg and instantly comes to rest with respect to the block. The block is suspended from the ceiling by means of thin wires. The height to which the block rises is ___

A moving ball of mass 0.1 kg undergoes an elastic head-on collision with another ball at rest. After the collision, the first ball rebounds at one-third of its original speed while the second ball starts moving forward. The mass of the second ball is__

A railway carriage of mass 10000 kg moving with a speed of 54 km/hr strikes a stationary carriage of the same mass. The two carriages get coupled and move together. Their common speed is__

With what percentage of the kinetic energy of a moving particle is transferred to a stationary particle that has a mass of 19 times the mass of the moving particle?