- Transport a ball a distance of 20 cm. Can you design a system to move the ball exactly 20 cm? Consider how to do this both reliably and efficiently.
- Energy Manager. Your goal is to land a ball gently in the collector. The catch? No walls allowed! How can you design your track to remove the ball's kinetic energy before it arrives?
- You are an engineer building an aerial bridge! Design and build a launcher to shoot a ball across a canyon (a ___ cm gap) so it lands safely in the receiver on the other side. No structures are allowed in the canyon!
- Design two different tracks for a head-to-head ball race! Both must start and finish at the same level, but one can be a straight speedway while the other has loops, curves, or a jump. Release the balls together. Which will win?