vcp=(s/2+s/2)/(s/(2*v1)+s/(2*v2))=2*v1*v2/(v1+v2)=2*10*15/(10+15)=12 м/с
================
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
vcp=(s/2+s/2)/(s/(2*v1)+s/(2*v2))=2*v1*v2/(v1+v2)=2*10*15/(10+15)=12 м/с
================