Ch7_GreensteinJ

toc =Notes 3/5=


 * Momentum
 * Definition
 * Quantity of motion
 * Mass * Velocity
 * Related to inertia
 * Symbol
 * p
 * Equation
 * p=m*v
 * Vector
 * Units
 * kgm/s
 * kilograms meters per second
 * N*s
 * Newtons seconds
 * Impulse
 * m * ∆v
 * Change in momentum
 * Need a force acting for some time
 * F=ma & a = ∆v/t
 * F*t=m*∆v
 * Left side
 * Impulse
 * Symbol- J
 * Contact time
 * Right side
 * Change in momentum
 * If net force is constant, "following through" increases time, increases change in velocity (Vf)
 * If ∆v is constant, to decrease Force, increase time
 * Law of Conservation of Momentum
 * Total initial momentum is equal to total final momentum as long as isolated system (No external forces)
 * Applies to all collisions
 * Equation
 * m1v1 i + m2v2 i = m1v1 f + m2v2 f

=Notes 3/6=


 * Elastic collision
 * KE is conserved
 * Inelastic collision
 * KE is not conserved
 * Explosion
 * Reverse collision
 * Law of Conservation of Momentum applies

=Notes 3/12=


 * Law of Conservation of Momentum
 * Total Initial Momentum = Total Final Momentum
 * m1v1 (initial) + m2v2 (initial) = m1v1 (final) + m2v2 (final)

=Notes 3/14=


 * Elastic collision
 * KE is conserved
 * ∆Vi = -∆Vf
 * Independent of mass
 * V1i + V2i = V1f + V2f
 * "Perfectly elastic head-on collision"