Momentum: formulas and units of measurement

Note: In the formulas for changing momentum, F is the average resultant force, and FΔt is the impulse of the force. The moment of force is denoted by M and is used to describe the rotational action of a force.

p

The momentum of a body is a measure of its mechanical motion.

m

Mass is a scalar physical quantity that is a measure of the inertia of a body.

v

Velocity is the rate and direction of change of a body's position.

F

The average resultant force is the ratio of the change in the momentum of a body to the period of time during which it occurred.

\Delta p

Change in momentum is the difference between the final and initial momentum of a body.

\Delta t

Time interval - the duration of the process under consideration.

F

Force - in the product FΔt, the value F denotes the average resultant force, and the entire product is the impulse of the force.