If there is a cotton ball on a spoon and you pull the spoon half way back and all the way back, which one would led the ball to going further, the half way back or all the way back? Please also add why and no links please!
Put that energy to use and build a rubber band–powered cotton ball launcher in ... Squeeze the roll so it becomes narrower (about half the original ... so you can poke your pencil or popsicle stick all the way through the tube. ... Repeat the previous steps, each time pulling the launcher back one inch farther.
