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Energy transfer occurs in a collision through the exchange of kinetic energy between objects.

When two objects collide, they exert forces on each other. These forces cause a change in the velocity of the objects, resulting in a transfer of kinetic energy. The amount of energy transferred depends on the mass and velocity of the objects involved in the collision.

In an elastic collision, the total kinetic energy of the objects before the collision is equal to the total kinetic energy of the objects after the collision. This means that the energy is conserved, and there is no loss of energy during the collision.

In an inelastic collision, some of the kinetic energy is lost as the objects deform or stick together. This means that the total kinetic energy of the objects after the collision is less than the total kinetic energy before the collision.

The coefficient of restitution (e) is a measure of the elasticity of a collision. It is defined as the ratio of the relative velocity of separation to the relative velocity of approach. A perfectly elastic collision has a coefficient of restitution of 1, while a completely inelastic collision has a coefficient of restitution of 0.

Overall, energy transfer in a collision is a complex process that depends on various factors, including the mass, velocity, and elasticity of the objects involved. Understanding these factors is crucial for predicting the outcome of collisions and designing effective safety measures.

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