Which of the following is not conservated in an inelestic collision ?

Options

A. Kinetic energy
B. Momentum
C. Neither momentum nor kinetic energy
D. Both momentum and kinetic energy

Answer

To determine which quantity is not conserved in an inelastic collision, we can analyze the properties of inelastic collisions step by step.

### Step 1: Understand the Types of Collisions
In physics, collisions are classified into two main types: elastic and inelastic. In elastic collisions, both momentum and kinetic energy are conserved. In inelastic collisions, momentum is conserved, but kinetic energy is not.

**Hint:** Recall the definitions of elastic and inelastic collisions.

### Step 2: Conservation of Momentum
In any collision, the law of conservation of momentum states that the total momentum of a system before the collision is equal to the total momentum after the collision. This holds true for both elastic and inelastic collisions.

**Hint:** Remember the formula for momentum: \( p = mv \) (momentum = mass × velocity).

### Step 3: Kinetic Energy in Inelastic Collisions
In inelastic collisions, while momentum is conserved, kinetic energy is not. Some of the kinetic energy is transformed into other forms of energy, such as heat or sound, or it may be used to deform the objects involved in the collision.

**Hint:** Consider what happens to the energy during a collision. Does it all remain as kinetic energy?

### Step 4: Conclusion
From the analysis, we conclude that in an inelastic collision, momentum is conserved while kinetic energy is not conserved. Therefore, the answer to the question is that kinetic energy is the quantity that is not conserved in an inelastic collision.

**Final Answer:** Kinetic energy is not conserved in an inelastic collision.