Hi guys I always confuse on this question its all about force. for example Let say I am pushing a wooden creat across the floor at constant speed.and I decide to turn the creat on end,to reducing by half the area in the contact with the floor . .........so if i push the same creat acroos the same floor with the same constant speed ....Does the force equall or one half greater or what??? I am thinking it will be equall because area doesnt affect force. in the other hand i am thinking it one half because the friction will be less i guess. I am just confuse??????