The most powerful problem-solving tool in AP Physics 1. Five episodes. One unbreakable law: energy is conserved.
Episode Guide โ Season 3
Motion has energy. The faster something moves or the more massive it is, the more energy it carries โ and that relationship is not linear.
Force alone doesn't change energy. Force applied over a displacement does. That's work โ and it's the only mechanism that transfers energy into or out of a system.
Stored energy ready to become kinetic. Gravity stores it in height, springs store it in stretch โ and where you call zero is entirely your choice.
The most powerful problem-solving tool in the course. Energy can't be created or destroyed โ only moved around. Use that fact to skip Newton's Second Law entirely.
Energy transferred per unit time. The same amount of work done faster takes more power โ and understanding that distinction matters everywhere from engines to muscles.