A launch on Earth and on the Moon

World 7: One launch, different gravity is part of PRO

The first world of Forces & Motion is free. PRO opens the other 50 lessons in 11 worlds — simulations, quizzes and all.

• 🔒 When does a block start to slip?
• 🔒 Sliding: net force and acceleration
• 🔒 Push up the ramp: which way does friction point?
• 🔒 Moving in a circle at a steady speed
• 🔒 A car on a flat curve

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly