World 3 · Gears: Torque vs Speed · 12 min · PRO
Shifting and efficiency
The right gear for the road
PRO · Engine Room
World 3: Gears: Torque vs Speed is part of PRO
The first world of Engine Room is free. PRO opens the other 20 lessons in 6 worlds — simulations, quizzes and all.
PRO includes
- All 60 labs — every world, every lesson
- Practice exams and certificates
$8.33/mo, billed yearly ($99.99) · or $39.99 monthly