August 31, 2013
Learn about friction.
Write about the reason plates that are 2 studs wide are used with wheels and axles.
Tight A little space
Record all your results - be sure to use units.
Replace the 2 by 4 plates with 1 by 4 plates. Notice the car can be more of a non-rectangular parallelogram now.
Why should the wheels go on so that the yellow hub is closest to the beam?
