0 votes
33 views
in Physics by (71.7k points)

Differentiate between Perfectly Elastic collision, Inelastic collision and Perfectly inelastic collision.

LoyBuzz.com

1 Answer

+1 vote
by (69.9k points)
selected by
 
Best answer
Perfectly Elastic collisionInelastic collisionPerfectly inelastic collision 
If in a collision, kinetic energy after collision is equal to kinetic energy before collision, the collision is said to be perfectly elastic.If in a collision kinetic energy after collision is not equal to kinetic energy before collision, the collision is said to inelastic.If in a collision two bodies stick together or move with same velocity after the collision, the collision is said to be perfectly inelastic.
Coefficient of restitution e = 1Coefficient of restitution 0 < e < 1 Coefficient of restitution e = 0
(KE)final = (KE)initialHere kinetic energy appears in other forms. In some cases (KE)final < (KE)initial such as when initial KE is converted into internal energy of the product (as heat, elastic or excitation) while in other cases (KE)final > (KE)initial such as when internal energy stored in the colliding particles is released.The term ‘perfectly inelastic ’ does not necessarily mean that all the initial kinetic energy is lost, it implies that the loss in kinetic energy is as large as it can be. (Consistent with momentum conservation)
Examples : (1) Collision between atomic particles
(2) Bouncing of ball with same velocity after the collision with earth.
Examples : (1) Collision between two billiard balls.
(2) Collision between two automobile on a road. In fact all majority of collision belong to this category
Example : Collision between a bullet and a block of wood into which it is fired. When the bullet remains embeded in the block.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...