Momentum & Impulse 2

3.2 Conservation of linear momentum

1. States

• “In an isolated (closed) system, the total momentum of that system is constant.”

OR

• “When the net external force on a system is zero, the total momentum of that system is constant.”, Sp = constant,

OR

•  The total of initial momentum = the total of final momentum

Sp_i = Sp_f

2. In 2-D Þ Sp_ix = Sp_fx
                 Þ Sp_iy = Sp_fy

3. Type of collission

# Use to determine either it's elastic or inelastic collision