Question
Distinguish between elastic and inelastic collision.
✓
Answer
| No. | Elastic Collision | Inelastic Collision |
| i. | In an elastic collision, both momentum and kinetic energy are conserved. | In an inelastic collision, momentum is conserved but kinetic energy is not conserved. |
| ii. | The total kinetic energy after collision is equal to the total kinetic energy before collision. | The total kinetic energy after the collision is not equal to the total kinetic energy before collision. |
| iii. | Coefficient of restitution (e) is equal to one. | Coefficient of restitution (e) is less than one. For a perfectly inelastic collision coefficient of restitution is equal to zero. |
| iv. | Bodies do not stick together in elastic collision. | Bodies stick together in a perfectly inelastic collision. |
| v. | Sound, heat and light are not produced. | Sound or light or heat or all of these may be produced. |
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