Motion, Force and Newton's laws of motion ; Sixth grade science ; Homeschool

 Motion, Force and Newton's laws of motion ; Sixth grade science ; Homeschool

It's been so long since I've been keeping track of my homeschooling weeks. But it seems like about 18 weeks has passed. This week’s science has been quite interesting- motion, force and newton’s law of motion. I’ve gotten most of these information from “Everything you need to know to ace science in middle school”, so credits to the smartest kid in class.

Motion: 

Motion is when something changes position. Flipping a book is motion. A car driving, is motion. Moving your head, is motion. Motion is everywhere. In fact,YOU are in motion every time you move. A relative motion is a relation to a reference point. For example, if there was a car, driving 30 miles per hour, and you see it go past the road- then you would have seen the truck drive 30 miles per hour. However, say that you were in a car that was driving 30 per hour just like the truck. What would happen? Well the truck wouldn’t seem to move for your reference because you and the truck are at the same paste. 

Force:

A force us a push and pull. Force can make wheel bikes turn, or cars speed up. Force is what creates motion or any kind of movement. Pushing a can, is movement. Crushing a can, is movement as well. Movement doesn't always have to be moving from one place to another; it can also change the shape of something. A net force is the combination of all of the forces acting on an object. For example, a magnetic and a fridge. Two magnetic forces are working at once.

Newton’s Law of motion:

Issac newton was the one who was able to figure force and motion. He made the law if motion to describe it to others. 

Newton’s first law of motion is: “An object in motion will remain in motion and an object at rest will remain at rest unless there is a net force acting on the object”. This means that an object won’t change unless a force is given to it. For example, if a ball is in the field, it will remain still until some kind of force comes to it. If we kick it, for instance, we are giving it force. If the wind blows it, it is getting force as well. The ball will only stop if some other force (like friction for example) stops the ball from rolling away. 

Newton’s second law of motion is: “This acceleration of an object is equal to the net force on an object divided by the mass of the object”. This explains the more force given to an object, the faster it will react. It also explains the more mass an object has, the more force you’ll have to add onto. For example: If I were to push a rubber ball and a bowling ball with the same amount of force, the rubber ball will obviously go further because of the small mass it has. The bowling ball would need more force added into it.

Newton’s third law of motion is: “Forces act in pairs: For every action there is an equal but opposite reaction”. If I were to hold a bowling ball near my chest and push it forward, the ball would possibly move forward depending on how much force you gave it. But, you will be pushed back as well. Here is a more simple example: If I was rowing a boat, I would be giving force for the paddle. But the boat would be moving as well. The third law refers to equal size of force and opposite direction of force. This technically means that there will be an opposite reaction when an action (force) is given. 

I think that this is far the most interesting topic I’ve ever studied. Do you agree?