Science Project
Montāžas Teksta
- Why can't I move this stupid box.
- Books
- Well, it all boils down to Newton's 3 laws.
- What are Newton's laws?
- Well, lets talk about it.
- So what is Newton's first law?
- Issac Newton has 3 laws that he made. The first one states that any object that is in motion will stay in motion until an unbalanced force acts upon it.
- What's an example of Newton's first law?
- If I try to move this box with 40 newtons of force, but this box weighs 60 newtons, it wouldn't move. But, if we both move the box with 40 newtons of force each, then the box will move.
- Oh, I think I got it. So objects that are heavier have more inertia, and an object will not change motion unless acted upon by an unbalenced force?
- Yep! that's 100% right.
- Thats cool and all, but what is another example of Newtons first law?
- If I kick this ball, the ball will roll until it is met with an unbalanced force, like a wall for example or your foot. Or, since friction is involved, the ball will slow down and eventually stop.
- Alright, so what is Newtons 2nd law?
- Newtons 2nd law states that unbalanced forces create acceleration which depends on their mass and inertia.
- Oh, that sounds confusing. Can you give me an example?
- Alright, say I'm pushing a shopping cart with nothing in it. And my friend is pushing a shopping cart filled with bowling balls. My cart's acceleration is going to be greater than his carts acceleration because my cart has less mass.
- I'm starting to get it, but not yet. What's another example?
- If I have a boulder that weighs 600 kilograms, my force isn't going to make It move easily. But, if I have a ball that weighs 1 kilogram, my force is going to be able to move it easier.
- Alright, so for a given net force, the more mass an object has, the less acceleration it has?
- You got it! And also, to calculate the acceleration of something you use a = F/m, or Force divided by mass.
- So that's two laws, but what is the last one?
- Well the last law is a push or a pull that acts upon an object. In otherwords, for every action, there is an equal and opposite reaction.
- You will have to explain that to me too, I don't get it.
- If you are on a boat and want to jump to a dock, the boat will go backwords when your going forwards because you are pushing on the boat with your legs.
- I'm starting to get it, but what's one more example.
- Ok, if you drop a tennis ball from a high height, the tennis ball will fall which is the action, and the reaction would be it bouncing up in the air.
- So, Newtons third law means for every action there is an opposite or equal reaction?
- Yeah! That's right! You got that finally.
- Alright, I got it!
- Books
- Yeah, you do! Now, use some extra force and lift that box up!
- Image Attributions: (https://pixabay.com/vectors/tennis-ball-yellow-sport-game-2025095/) - OpenClipart-Vectors - License: Free for Most Commercial Use / No Attribution Required / See https://pixabay.com/service/license/ for what is not allowed
Attēlu Piedēvējumi
- https://pixabay.com/vectors/tennis-ball-yellow-sport-game-2025095/ - OpenClipart-Vectors - (Licence Free for Most Commercial Use / No Attribution Required / See https://pixabay.com/service/license/ for what is not allowed )
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