The spring catapult
Explorers (Foundation), mission E7 Wind It Up!, lesson 2 of 6.
Hook
Boing! Where does the power to fly come from?
Fair test
Launch a pompom with the arm pulled back a little, then a lot. Measure with hand-spans.
Bonus challenge
Aim for a cup. Three tries each!
The build
- 🎯 Spring Catapult: Cock the arm, click the trigger, FIRE! A spring flings the ammo across the room. (level 2 of 5, about 25 minutes, 14 steps)