s1=s2=s/2 v1=5 v2=10 vcp=?
vcp=((s1+s2)/(t1+t2)
t1=s1/v1=s/(2*v1) t2=s2/v2=s/(2*v2)
vcp=2*v1*v2/(v1+v2)=2*5*10/(5+10=6.67 м/с
s1=s2=s/2 v1=5 v2=10 vcp=?
vcp=((s1+s2)/(t1+t2)
t1=s1/v1=s/(2*v1) t2=s2/v2=s/(2*v2)
vcp=2*v1*v2/(v1+v2)=2*5*10/(5+10=6.67 м/с