Physics

3.

(a)

xCoM =
m
1×1 + m2x2

m1 + m2

vCom = Dxcom

dx

d(m1x1 +m2x2/m1=m2)

dt

m1dx1 + m2dx2

dt dt

(m1v1 + m2v2/m1 +m2)

(b)

Vcom = m1v1 + m2v2

m 1+ m2

Momentum of system along x axis = m1v1 + m2v2

Vcom = x

m1 + m2