Ch. 7 Momentum
by emily esser

1. Linear Momentum
1.1. vector Quanity having same direction as the velocity
1.2. The vector of p = mass times the vector of velocity
1.3. The momentum and changes of two objects are always equal and opposite
2. Momentum
2.1. Vector quanity
2.2. For momentum to be Conserved these things must be constant
2.2.1. Magnitude
2.2.2. Direction
2.3. Mass and velocity involved
2.4. Conservation
2.4.1. If no external force acts on system, the initial momentum of the system is equal to the final momentum of the system.
3. Collisions
3.1. Completely Inelastic
3.1.1. “Perfect Sticking”
3.1.2. Conservation of only momentum
3.1.3. m1v1i +m2v2i = (m1 +m2 )vf
3.2. Inelastic
3.2.1. “Sticky” but the bodies do not stick together
3.2.2. Conservation of momentum only
3.3. Elastic
3.3.1. “Perfect bouncing”
3.3.2. Conservation of kinetic energy and momentum
3.3.3. m1v1i +m2v2i = m1v1f +m2v2f
4. System of Particles
4.1. Center of Mass
4.1.1. Average location of the mass in a system of particles
4.1.2. 3D in general
4.1.3. Motion of the Center of Mass
4.1.4. Isolated system moves at a constant velocity