MOMENTUM, IMPULSE, AND COLLISION

Momentum

describes how unstoppable a moving body is. This is a

vector quantity that is the product of an object’s mass and velocity.

Elastic collision

a collision wherein both the total momentum and the kinetic

energy of the system are conserved before and after the collision.

Inelastic collision

a collision wherein the total momentum of the system is

conserved but not the kinetic energy.

Objects are deformed during the collision.

Perfectly inelastic collision

a collision in which two objects stick together and move

with a common velocity after colliding.

Examples: Arrow hitting a target, bullet lodging into a wood, meteorite colliding

with Earth and becomes buried

Center of Mass

It is defined as the point through

which the whole weight of the

object seems to act. It is

dependent on the distribution of

the weight through out the body

Geometric Center

center of a given figure. It is

independent of the mass of the body and is the

central point of the system based on its

geometry (shape and size)