Question

What is collision and mention its two type ?

Answer 1

heya @user
here is your answer

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=> When two bodies come close together and interact strongly for a short time of Collision is said to take place between them.
it no net internal force is acting on the particles then according to the law of conservation of momentum the total momentum of system just before collision is equal to that just after collision.

=> Classification of collision

★ Collision are classified according to whether or not kinetic energy is conserved in the collision.

A ). Elastic Collision - if the kinetic energy is conserved the collision said to be elastic

B ). Inealstic collision - If the kinetic energy is not conserved the collision is said to be inelastic collision.
the kinetic energy is converted into some other forms of energy that is heat sound, etc......

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hope helped !!

Answer 2

The collision between two objects is defined as
that interactions due to which the momentum kinetic energy of both the objects changes.

It is not necessary in the process of collision that the objects makes the contact with each other.

For example:- In the collision of a bus and a car both of them makes contact with each other but in the collision of light particles, like electron, proton the particles does not touches to each other.

There are two types of collision:-
(a) Elastic
(b) In- elastic