Stronger push, faster car
Explorers (Foundation), mission E7 Wind It Up!, lesson 3 of 6.
Hook
Does a bigger push always mean a faster car?
Fair test
Pull back short, medium, long. Time each run by counting “one elephant, two elephants”.
Bonus challenge
Make a “speed bump” from a pencil. Can the car get over it?
The build
🏁 Pull-back Racer: Pull it back, let it go — ZOOM! A racer with a spring for an engine. (level 2 of 5, about 12 minutes, 10 steps)