Newton's Three Laws of Motion

   Hey guys, I'm back with another post! This week, we'll be discussing Newton's Three Laws of Motion. And I think it's safe to say that we've been discussing Newton quite a bit lately. Yup, he's done a lot of stuff, and now we're doomed to talk about it every week -__-. Yeah, it can be tedious...but that's okay, I guess (not really)!

Newton's First Law Of Motion
 An object at rest stays at rest, and an object in motion stays in motion at a constant speed and in the same direction until it is acted upon by an external force. For example, if a ball is sitting on the sidewalk, it will remain that way until it is moved. Now, say someone wanders up and kicks the ball. The ball will roll at the same speed and in the same direction until an external force halts its movement(s); like it runs into a wall, or someone else kicks it in a different direction and changes its velocity.

Newton's Second Law of Motion
  When a force acts on a mass, it produces acceleration. The more mass an object has, the more force that needs to be applied to accelerate it. For example, it will take you a lot less force to move a soccer ball by kicking it than it would to kick a brick wall. You use the formula F(force)= m(mass) * a(acceleration).









(Newton's Second Law= Mo'e force, Mo'e acceleration)



Newton's Third Law of Motion
  For every action there is an equal and opposite reaction. Think of Newton's Cradle; when you let one ball fall it will hit the one next to it. Then the force will cause the ball all the way on the end of the row to swing. The ball at the other end will then swing back and hit the one next to it. The two balls at the end will continue to swing back and forth for a while.

 

Hope you guys enjoyed!

 

I'll be back soon!

George Clooney Dies In The Beginning! Can You Guess?

   Hey guys, I'm back with another post, as promised! And if you haven't already figured out what we'll be discussing this week via my totally awesome #spoileralert title, I'll give you a hint: it's gravity! Okay, well maybe that's not much of a hint (since it's the answer), but moving on!
 



   Gravity is a natural phenomenon by which all physical bodies attract one another. Gravity is what pulls your baseball back to the ground if you throw it up in the air. The phrase "What goes up must come down" often comes to mind when discussing gravity.

   Now many of you may be familiar with Galileo Galilei's famous gravity experiment, but in case you aren't, we'll talk about it now. Galileo climbed to the top of the Leaning Tower of Pisa with two balls of different masses. He then took the two balls and dropped them at the same time from the same distance, his goal to prove Aristotle's theory that things fell faster depending on their masses false. He, of course, did, and discovered that the two objects fell with the same amount of acceleration.

   Did you know that the same day Galileo died, Sir Isaac Newton was born? This really brings that trite expression "When one door closes, another one opens" to life, doesn't it? Newton contributed greatly to the world of physics, one of them being gravity. There is a legend that Newton was one day sitting under an apple tree, and an apple fell on his head. He then began thinking "What force pulled that apple from the tree?". This is when he came up with his Universal Law of Gravitation. Part of his law states that the effect of gravity has to do with an objects mass and its distance from another object.

    Now let's stop for a minute. I've noticed that I have said the word mass quite a bit in this post. People sometimes confuse the words 'mass' and 'weight' with each other. If you are one of those people, I'll tell you the difference so you'll never have to worry or wonder again! Mass is the amount of space an object takes up, while weight is the measure of how heavy an object happens to be. Pretty simple, huh?
   Lastly, I would just like to stress just how important gravity is to us. If it weren't for gravity, we would all just float off aimlessly into space because there would be nothing to anchor us to the ground. Gravity affects anything and everything in the universe, and it keeps us on our beloved Earth.

That's it for this week! Hope this was

helpful for everyone! And go see Gravity;

it's pretty good!

May The Force Be With You

   Hey everyone, I'm back with another post! This week, we'll be discussing force. And I hope that I'm not the only person that thinks of Star Wars when I hear the word force. That would just be embarrassing. Anywho, let's get started!
   A force is a push or a pull on an object. For example, if someone kicks a soccer ball and it moves, that is an example of a push, which is force. Next comes Newtons. A Newton is an SI (System Internationale) unit used to measure force.

  Now, we'll talk about net force. Net force is when more than one force acts upon an object at the same time. So, say two people are pushing on a door from opposite sides. If the person on the right was using more force to push the door, the prevailing force would be on the right; this force is the net force.
   There is another type of force I haven't mentioned called thrust. Thrust is a mechanical force that is used to move an object through the air, and it works against the drag of an aircraft.

   Now we'll talk about something that is important in force, and that is balanced and unbalanced forces. Let's say that there is a rock on the ground. This rock is being pulled downwards by the force of gravity with 6 Newtons. But in order to keep the rock from falling through the ground, there has to be another force acting upon it, which is the normal force. This moves upward with about 6 Newtons as well and keeps the rock in place. This is a balanced force. Now for another example, let's say the rock is also being pushed by a person on the right side with a total of 3 Newtons, and another person is pushing from the left with a total of 7 Newtons. The forces are now unbalanced due to the forces from the right and left side, and the friction from the rock's right movement.

   Lastly, we'll talk about centripetal force. Centripetal force is a force that makes an object follow a curved path, and is generally the cause for circular motion. Think of a roller coaster; when the cars are forced through a loop by the tracks applying a centripetal force to them.

That's it for now, but I'll be back soon enough

Hope you all enjoyed!