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The point at which a given net force acting on the system will produce the same acceleration as if all the mass were concentrated at that point.
A force applied over a period of time. See definition of impulse.
The product of an object's mass and velocity. See definition of momentum.
The principle stating that for any system with no external forces acting on it, momentum will be conserved.
| Position of the center of mass of a system of particles | xcm =   mnxn |
| Velocity of the center of mass of a system of particles | vcm = mnvn |
| Acceleration of the center of mass of a system of particles | acm = mnan |
| Acceleration of the center of mass of a system of particles given an external force | Fext = Macm |
| Definition of Impulse | J = FΔt |
| Change in velocity caused by an impulse | J = mvf - mvo |
| Definition of momentum | p = mv |
| Relation between force and momentum |  = F |
| Impulse-Momentum Theorem | J = Δp |
| Definition of the linear momentum of a system of particles | P = Mvcm |
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