When one body struck another body, the collision is said
to occur in two.
Type of Collision
1. Elastic Collision
A collision in which there is absolute no loss of kinetic
energy is called Elastic Collision.
 |
| Elastic Collision |
Characteristic of Elastic Collision
- · Linear momentum is conserved
- · Kinetic energy is conserved
- · Total energy is conserved
2. Inelastic Collision
A collision in which there occurs in some loss of kinetic
energy is called Inelastic Collision.
Characteristic of Inelastic Collision
- · Linear momentum is conserved
- · Kinetic energy is not conserved
- · Total energy is not conserved
3. Perfect Inelastic Collision
A collision in which there occurs maximum loss of
energy is called Perfect Inelastic Collision.
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| Perfect Inelastic Collision |
Coefficient of Restitution (e)
Coefficient of restitution is defined as the ratio of
relative velocity of separation after collision to the relative velocity of
approach before collision.
If relative velocity before collision = U1 –
U2 and relative velocity after collision= V2 – V1
Then Coefficient of Restitution (e) = V2 – V1 / U1 –
U2
If e = 1 (Then it is called Elastic Collision)
If e = 0 (Then it is called Perfectly Inelastic Collision)
If 0 < e < 1 (Then it is called Inelastic
Collision)
