In an inelastic collision

Options

A. the initia kinetic energy is equal to the finl kineitc energy
B. the final kinetic energy is less than the initial kineitc energy
C. the kinetic energy remains the constant
D. the kinetic energy first increases then decreases

Answer

To solve the question regarding inelastic collisions, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Inelastic Collisions**:
- In an inelastic collision, two bodies collide and do not separate completely after the collision. This means they may stick together or deform.

2. **Kinetic Energy Consideration**:
- In any collision, the total energy is conserved, but kinetic energy is not conserved in inelastic collisions. Some of the kinetic energy is transformed into other forms of energy, such as potential energy due to deformation.

3. **Energy Transformation**:
- During the collision, a portion of the initial kinetic energy is converted into deformation potential energy. This means that the kinetic energy after the collision will be less than the kinetic energy before the collision.

4. **Comparison of Kinetic Energies**:
- Therefore, we can conclude that the initial kinetic energy (before the collision) is greater than the final kinetic energy (after the collision). This is a key characteristic of inelastic collisions.

5. **Selecting the Correct Option**:
- Given the options provided in the question, we identify that the statement "initial kinetic energy is more than final kinetic energy" corresponds to option B. Hence, option B is the correct answer.

### Final Answer:
The correct option is B: "initial kinetic energy is more than final kinetic energy".

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