Is Khan Academy enough for AP Physics 1?

Khan Academy is a solid free resource for brushing up on specific physics topics, but for most students it's not enough on its own to score a 4 or 5 on AP Physics 1.

Where Khan Academy falls short

Feature	Khan Academy	PhysicsGraph
Content depth	Surface-level, single-concept problems	Deep coverage, 200 topics leading up to multi-step problems and FRQs
FRQ practice	None	Dozens of FRQs with AI grading
Spaced review	Optional, easy to skip	Built-in, automatic
Learning path	Jump to anything, any order	Structured via knowledge graph
Core format	Video-first	Problem-first

Khan Academy doesn't go deep enough. They cover the major topics, but AP Physics 1 requires you to apply concepts in complex, multi-step scenarios. Khan Academy's practice problems tend to be straightforward single-concept questions. The AP exam is not.

No FRQ practice

Free Response Questions are 50% of your AP score. Khan Academy doesn't offer FRQ practice with grading, and this is where most students lose the most points. If you only practice multiple choice, you're only preparing for half the test.

Passive learning bias

Khan Academy is built around videos. Watching a video feels productive, but you learn physics by solving problems, not by watching someone else solve them. They do have practice exercises, but the platform's core experience pushes you toward more videos. This is baked into their DNA - they started as a video platform and always will be one.

No real spaced review

Khan Academy has a spaced repetition feature, but it's optional and easy to ignore. Without systematic review, you'll forget earlier topics by the time the exam comes around. That's especially dangerous in physics where later topics build on earlier ones.

No adaptive path

Khan Academy lets you jump to any topic at any time. Sounds like freedom, but in physics, learning topics out of order means you constantly hit walls because you're missing prerequisites.

When to use Khan Academy

Khan Academy is a great supplement - especially if you want a quick video explanation of a specific concept. But if you're serious about the AP exam, you need structured progression, heavy problem practice, FRQ preparation, and spaced review.

That's exactly what PhysicsGraph was built to do.