**Elastic bodies**: The bodies which rebound after impact are called elastic bodies.

The impact between two rubber spheres is an elastic impact.

**Inelastic bodies**: The bodies which does not rebound at all after its impact are called inelastic bodies.

The impact between two lead spheres or two clay spheres is approximately an inelastic impact.

**Coefficient of restitution** is defined as the ratio of Relative velocity after impact to Relative velocity before impact. Coefficient of restitution is denoted by '**e**'.

**e = 0**, For perfectly inelastic bodies .

**e = 1**, For perfectly elastic bodies.

**0>e>1**,(value of e lies between zero and one) For bodies neither perfectly inelastic nor perfectly elastic.

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**89) **The coefficient of restitution for inelastic bodies is

**Answer is:**

## zero

**Explanation:**

**Related Engineering Mechanics MCQ with Answers**

**Answer is:**

### equal and opposite to

**Answer is:**

### The kinetic energy of a body before impact is more than the kinetic energy of a body after impact.

**Answer is:**

### all of the above

**Explanation:**

When two elastic bodies collide with each other

* the two bodies will momentarily come to rest after collision

* the two bodies tend to compress and deform at the surface contact

* the two bodies begin to regain their original shape