A shopping bag is hanging straight down from your hand as you walked across a horizontal floor at a constant speed. Does the force that your hand exerts on the bag's handle do any work? Explain. Does this force do any work while you are riding up an escalator at a constant velocity? A shopping bag is hanging straight down from your hand as you walked across a horizontal floor at a constant speed. Does the force that your hand exerts on the bag's handle do any work? Explain. Does this force do any work while you are riding up an escalator at a constant velocity?