https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:conservation-fo-energy/a/activity-how-do-engineers-design-roller-coasters 2026-01-26T00:30:32.82909804Z Activity: How do engineers design roller coasters? Make science come alive in your classroom with this free hands-on activity aligned to high school standards. article