Newton's Laws: Crash Course Physics #5
I'm sure you've heard of Isaac Newton and maybe of some of his laws. Like, that thing about "equal and opposite reactions" and such. But what do his laws mean? And how do they help us understand...
==========
We’ve been talking a lot about the science of how things move -- you throw a ball in the air, and there are ways to predict exactly how it will fall. But there’s something we’ve been leaving out: forces, and why they make things accelerate. And for that, we’re going to turn to a physicist you’ve probably heard of: Isaac Newton. With his three laws, published in 1687 in his book Principia, Newton outlined his understanding of motion -- and a lot of his ideas were totally new. Today, more than 300 years later, if you’re trying to describe the effects of forces on just about any everyday object -- a box on the ground, a reindeer pulling a sleigh, or an elevator taking you up to your apartment -- then you’re going to want to use Newton’s Laws...
==========
We’ve been talking a lot about the science of how things move -- you throw a ball in the air, and there are ways to predict exactly how it will fall. But there’s something we’ve been leaving out: forces, and why they make things accelerate. And for that, we’re going to turn to a physicist you’ve probably heard of: Isaac Newton. With his three laws, published in 1687 in his book Principia, Newton outlined his understanding of motion -- and a lot of his ideas were totally new. Today, more than 300 years later, if you’re trying to describe the effects of forces on just about any everyday object -- a box on the ground, a reindeer pulling a sleigh, or an elevator taking you up to your apartment -- then you’re going to want to use Newton’s Laws...
