Newton's Second Law of Motion

11-11-12 By: Caitlyn Maddox

Newtons Second Law of Motion

Newtons second law states that an object that is acted on by an unbalanced force will accelerate in the same direction of that force on the object. This means that if an object is not moving and just sitting still, when it is acted on by an unbalanced force that is pushing it forward, the object will move forward in a straight line until slowed down by friction.

English Physicist Sir Issac Newton discovered this law was indeed true in 1687 along with his two other laws of motion.

In this sceniro if a roller coaster cart is going up the hill, once it reaches the top gravity will pull it down forcing it to move down (the direction) and in a straight line or which ever way the hill is going and where gravity is pulling it.

Example of the second law of motion...

Pushing a box across the floor

If a cardboard box is sitting on the ground and a boy comes up and shoves the box ahead of him, the box will move in a straight path towards the direction that the boy pushed it in. This is an example of Newton's second law of motion.

Everyday situation/fact: Newton's second law.

Imagine this...

If you are out on the soccer field playing with your team and the ball comes to you, you would kick the ball towards the goal. This would mean that the force of your kick from your foot would send the soccer ball accelerating towards the goal to try to make it in. But if we go just a little deeper into to detail you can figure out that actual amount of force you are using to kick the ball itself.

How do you that? Well, Newton figured out along with this law that to measure the amount of force used to do something you have to multiply the mass of the object and the acceleration (f=MxA)!

So next time you play a sport, think about what you are actually doing and how hard you are actually working. You just might want to try and figure out how much force you are using by hitting the volleyball or swinging the baseball bat...