Your mission

The big derby is today, and the garage is locked five ways. A FORCE is a push or a pull. Forces make things start, stop, speed up, slow down, or turn. When two forces push against each other, the stronger one wins. When they are equal, nothing changes. FRICTION is a force that slows things down when surfaces rub together. SPEED is how far something goes in a certain amount of time. Felix left his race notes, but he did not explain them.

How to crack a lock

  • Pick any lock from the menu at the top. You can solve them in any order.
  • Read every clue before you start. One clue alone is never enough.
  • Use scratch paper. Draw pictures, make lists, and cross things out.
  • Tap the buttons to build your answer. Then press "Try the lock".
  • A lock will not tell you which part is wrong, so be sure before you try.

My badges

Teacher note

Teachers: type the password to see the answer key.