(9.1)p→=mv→(Momentum) p→=p→A+p→B+...=mAv→A+mBv→B+... (9.2)∑F→=dp→dt(Newton's second law) ∑F→=d(mv→)dt (9.3)J→=Δp→(Impulse) Δp→=∑F→Δt J→=∑F→Δt=∫∑F→dt (9.4)r→cm=m1r→1+m2r→2+m3r→3+...m1+m2+m3+...(Center of mass) (9.5)Mv→cm=m1v→1+m2v→2+m3v→3+...=P→(Momentum of center of mass) (9.6)∑F→ext=Macm→(Collection of particles, net charge ~ 0)
Next module Extended objects and rotational motion