Collisions in On1

Collisions in On1 - Collisions in One-Dimension: Inelastic...

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Collisions in One-Dimension: Inelastic If no external forces act on a system, its momentum is conserved. However, kinetic energy is not always conserved. An example of an inelastic collision is a collision in which the particles stick together (after the collisions). This type of a collision is a completely inelastic collision (of course, even in a completely inelastic collision, the total energy is conserved. The lost kinetic energy is converted into another form of energy: for example, thermal energy, energy of deformation etc.) Example Problem 10-2 Suppose a mass m 1 is moving with an initial velocity v i and collides with a mass m 2 , which is initially at rest (see Figure 10.3). The two masses stick together. What is the final velocity of the system, and what is the change in the kinetic energy of the system ? Figure 10.3. Completely Inelastic Collision. The initial momentum of the system is p i = m 1 v i The final momentum of the system is p f = (m 1 + m 2 ) v f Conservation of linear momentum implies
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Collisions in On1 - Collisions in One-Dimension: Inelastic...

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