Collisions

Collision occurs when two or more objects hit each other.

Kinds of Collision
     a. Elastic Collision - are collisions in which both momentum and kinetic energy are conserved. The total system kinetic energy before the collision equals the total system kinetic energy after collision.
  b. Inelastic collision - a collision in which the total kinetic energy after the collision is less than the collision.
   c. Complete inelastic - inelastic collision in which the colliding bodies stick together and move as one body after collision.