Hi everybody. I'm not good at physics/math but I really want to (someday...) and this problem for a lab next week has been bugging me for the last... 5 minutes. It says: For a block moving at constant speed, if the applied force just balances the frictional force, why does the block move? I have no idea... And yes I'm stupid if that's what you're thinking. >_< If it moves at constant speed then there's no acceleration.. and I'm thinking total forces balance out to 0... so why does it move?