Terms and Formulae
Terms
Collision
-
The brief direct contact between two bodies that results in a net impulse on
each body.
Elastic Collision
-
Any collision in which kinetic energy is
conserved.
Inelastic Collision
-
Any collision in which kinetic energy is
not conserved.
Completely Inelastic Collision
-
Any collision in which the two bodies stick together.
Formulae
|
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
|