Foundations & frontiers

Start here. What physics is really about, the open frontier of the field, and the first force puzzle that opens the door to mechanics.

Physics can feel like a wall of equations, so this short track steps back to ask what the subject is actually for: finding the simplest rules that predict how the world behaves, from falling apples to distant galaxies.

It then looks at the frontier, the questions still open today, before turning to a deceptively simple puzzle: what holds a still object still? That question about balanced forces is the seed of everything in mechanics.

What you will learn:

  • What physics studies and how it works
  • The open frontier of modern physics
  • Balanced forces: what holds a still ship still

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Frequently asked questions

Is this track good for a complete beginner?
Yes. It assumes no background and starts from what physics is and why it works, using everyday examples before any equations appear.
What does it mean for forces to be balanced?
When the forces on an object cancel out there is no net push, so a still object stays still and a moving one keeps its motion. That balance is the starting point for Newton's laws.