TYPES OF COLLISIONS EXAM QUESTIONS AND ANSWERS.

Elastic Objects interact with each other without producing sound, heat, or light *Both momentum and kinetic energy are conserved, total momentum and kinetic energy before and after are the same Ex: the two magnets facing each other Inelastic Sound, heat, or light are produced, so kinetic energy is NOT conserved *Kinetic Energy is different before and after the collision, BUT momentum is conserved Completely Inelastic Two objects strike each other and stick together *Kinetic Energy is not conserved, BUT momentum is *After collision, since the two objects are stuck together, they have the same final velocity Explosion Type of inelastic collision where one object is initially carrying the second object, or two objects are stuck each other. *They have the same initial velocity, and after the two objects are no longer joined together *Momentum is conserved, Kinetic Energy is not