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Collision
The brief direct contact between two bodies that results in a net impulse on each body.
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Elastic Collision
Any collision in which kinetic energy is conserved.
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Inelastic Collision
Any collision in which kinetic energy is not conserved.
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Completely Inelastic Collision
Any collision in which the two bodies stick together.
Terms
Formulae
Position of the center of mass of a system of particles | xcm = ![]() ![]() |
Velocity of the center of mass of a system of particles | vcm = ![]() ![]() |
Acceleration of the center of mass of a system of particles | acm = ![]() ![]() |
Acceleration of the center of mass of a system of particles given an external force | ![]() |
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 | ![]() ![]() |
Impulse-Momentum Theorem | J = Δp |
Definition of the linear momentum of a system of particles | P = Mvcm |