Question

Elastic and Inelastic Collisions​

Answer 1

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Elastic and Inelastic Collisions

A collision is an interaction between two objects resulting in the exchange of impulse and momentum. The time of impact is usually small; the impulse provided by external forces like friction during this time is negligible. When two or more bodies collide, the momentum of the system is therefore approximately conserved. In an isolated system, the total momentum before the collision is equal to the total momentum of the system after collision.

total momentum before collision = total momentum after collision

There are two types of collision and are categorized according to whether the system's total kinetic energy changes. It may or may not be conserved depending on the type of collision. It may lose during collisions when (1) it is converted to heat or other forms like binding energy, sound, light (if there is spark), etc. and (2) it is spent in producing deformation or damage, such as when two cars collide.

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The two types of collisions are:-

1. Elastic collision ☞ states that the system's total kinetic energy does not change and colliding objects bounce off after collision. (no kinetic energy is loss, no damage, no heat)

Examples:

• Motion of atoms and molecules
• Hitting billiard balls
• When a soccer player kicks a ball since the player's foot and the ball do indeed remain completely separate after collision.

2. Inelastic collision ☞ states that the system's total kinetic energy changes (i.e., converted to some other form of energy). Collision is said to be perfectly inelastic if after collision the objects stick together and move as one mass with one velocity.

Example:

• Celestial bodies collide, like two asteroids, they fuse together to form a larger body.

$= = = = = = = = = = = = = = = = = =$

Additional Information:-

☞ brainly.com/question/24616147

☞ brainly.com/question/12941951

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