Isaac Newton's Laws of Motion by Robert Malone and Jordan Gamburg
Hi, I'm Deacon and I'm going to demonstrate two out of three of Isaac Newton's laws of motion. Isaac Newton was a scientist who studied physics, the study of why and how objects move the way they do.
The first one I'm going to demonstrate is Newton's first law of motion: the law of inertia.
Notice how I just kicked the ball toward the net. The force my foot had on the ball was enough to make it move. The ball is now headed toward the net in a straight line.
So let's say I spun the ball around with my foot and it kept circling on the ground for as long as my foot was on it. Well, if I suddenly were to have my foot let go of the ball, it would just go in a straight line.
This is because when an object stops being spun around, on account of inertia, there is no force causing it to spin around anymore, but it will still move in a straight line.
When I kicked the soccer ball into the goal, something else happened: the force of my foot on the ball was equal to the ball's force on my foot. This is an example of Newton's third law of motion: that every action has an equal and opposite reaction.
Although the two forces were equal, that doesn't mean the direction the ball traveled in when it was kicked by my foot was the same, since the ball had an equal BUT OPPOSITE reaction. It went the other way in the opposite direction: an opposite reaction.
This means that all objects hit by a force will apply the same amount of force onto that force but always travel in the opposite direction of the force.