Northwestern Physics Demos                                 Go back to Mechanics
DCS# 1E10.10NWU# M-?Location   end of 2 & 3
title: Bulldozer on Moving sheet
aka: Crossing the River

Description:
Toy bulldozer moves at a constant speed across a sheet of plastic on wheels.  The velocity of the bulldozer relative to the earth is seen as the vector addition of its velocity and that of the sheet.

Questions:
   What direction do you aim the bulldozer so that it moves directly across a moving sheet?
 
pix of plastic "river"