What are physical principles?

Physical principles are like invisible rules that help things happen in the world around us, just like how a game has rules that make it fun to play.

Imagine you're playing with building blocks. You know that if you stack them too high, they might fall over. That’s because of gravity, one of the physical principles. Gravity is like an invisible hand that pulls everything down toward the ground. It's why your toys stay on the floor and don’t float up to the ceiling.

Another example is motion, when you push a toy car, it moves. If you stop pushing, it slows down because of something called friction, which acts like tiny invisible hands trying to hold the car back.

Think about riding your bike. You pedal and go forward, that's force at work. When you stop pedaling, friction and air resistance make you slow down. These are all physical principles working together, just like rules in a game. They help explain why things move, fall, or stay still, without needing any magic!