Newtons laws

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Force & Motion

av Anis Solehah

Initial Answer:They affect pretty much everything that moves and are based off what we assume to happen to objects when they are move

Final answer:They impact our lives because without them we wouldn’t understand how/why balls roll and how they stop, we wouldn’t understand why things fall like they do, everything would just happen and there would be no explanation.

How do Newton’s laws impact our everyday lives?

How can two objects of different sizes exert the same amount of force on each other?

Personal Experience: It's kind of like a treadmill, it spins which makes you have to run faster so you don’t fall off. You running is like your force and the treadmill spinning is its force and you are “pushing” against it by running. I seen someone hit a wall and their knuckles start bleeding because they feel the force they hit the wall with.

Evidence: Momentum: the quantity of motion of a moving body, measured as a product of its mass and velocity Momentum formula: P=mv (momentum= mass x velocity) If a person weighs 100 kg and is going 10 m/s it would have to same force as a person that weighs 1000 kg and is going 1 m/s or a person that weighs 10kg going 100 m/s . The weight doesn’t really matter, only thing that matters is the end force, when you multiply weight and speed. If you hit something and your hand hurts it's because you feel the force you hit with back onto your hand.

Claim: The smaller one must put more force into it because he has less momentum just because he weighs less. The bigger one has more weight so even with a little speed he gains much more force than a smaller person. The other part of the third laws is if you apply force to something you will feel the force you put in back on yourself.

Sources: 21, 22

In which direction will an object move if acted on by multiple forces?

Personal Experience: My brother and I were pushing a four wheeler when it ran out of gas, he was on it and that is sort of and opposite force pushing against me pushing it because it is making it heavier and making there be more friction

Evidence: -------------> [] ←------ 30N 15N It will go ----> with 15 N of force If you are playing tug of war the only way you can win is but pulling more than the other side. A push and a pull are both forces and when you are adding to the net force. Mass doesn’t really relate to acceleration in the formula aspect but it does if you’re trying to find the amount of force being applied. Acceleration formula: A = Vf - Vi / Time

Claim: It will simply go the way the greater force is applied.

Sources: 20

Why do objects at a constant velocity remain at that velocity?

Personal Experience: I was riding a scooter at a campground when i was like 10 and i rode it down a steep hill and couldn’t stop in so once i got in the grass i fell off, it's kind of the same thing

Evidence: Its like cruise control, It keeps going until an outside force stops it, such as the brakes. The brakes will stop the cruise control and the car too. Inertia: a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force Inertia is the “reason” that the velocity stays constant.

Claim: The objects will only remain at that constant velocity if an outside force doesn’t act against it. And that is exactly why it remains at a constant velocity, nothing is stopping it

Sources: 18