Momentum and Inertia
Momentum is a measure of mass in motion and is defined as mass times the velocity of that body in motion. Momentum involves movement and relates to classical mechanics. Inertia measures the resistance of the body to changes in its motion and mass is considered to be a fundamental measure of inertia. Momentum and inertia consider different factors relating to motion or resisting motion. Momentum is influenced by weight and cannot be stopped unless resistance in applied to the moving body. Inertia can be stopped and is influenced by gravity as well as friction.
Momentum is a measure of mass in motion and is defined as mass times the velocity of that body in motion. Momentum involves movement and relates to classical mechanics. Inertia measures the resistance of the body to changes in its motion and mass is considered to be a fundamental measure of inertia. Momentum and inertia consider different factors relating to motion or resisting motion. Momentum is influenced by weight and cannot be stopped unless resistance in applied to the moving body. Inertia can be stopped and is influenced by gravity as well as friction.

