Newton's laws and Momentum

Newton's Laws and Momentum

Newton's 2nd law

Newton's 1st Law

Directly proportional - 1 varible increases the other variable increases Inversely proportional - 1 variable decreases the other increases

Newton's 1st law states that an object will remain at rest unless a force greater than it acts on it. Inertia is a part of the 1st law, inertia is the resistance to change in motion based on it mass. there are 3 collisions in a car crash, there is the 1st collision which is the car crashing, the 2nd collision the person's body crashing, and then the 3rd collisions the internal organs of the person crashing. With our egg crash challenge, there are also 3 collisions, the paper car crash, the eggshell crash, and then the yolk inside crash.

Newton's 2nd law states that acceleration is directly proportional to Fnet but inversely proportional to mass. This means that if Fnet increases the acceleration will also increase, but if the mass increases the acceleration will decrease.

crash dummy is a great example of inertia

Before After

2nd law can apply to our egg crash because our acceleration depends on our mass or the amount of paper we put on our car, for example the car in the before picture has less mass this means it would have a higher acceleration compared to the after that should have a lower acceleration compared to before.

Inertia - The resistance an object has to changing its motion, heavier something is the more it resist to change in motion

Cool Vids

Law of Conservation of Momentum

Newton's 3rd law

law of conservation of momentum states that in a event momentum will have the same amount before and after the event. this means that if we have 50 momentum before than we must have 50 momentum after. you can caculate momentum by finding the velocity and the mass of an object then all you need to do is multiply velocity and mass you will then get your momentum. for our egg crash challgange I had 85.2 g for mass and a velocity of 454.54 cm/sec then i mulitplied them equaling 38726.88 g*cm/sec that was my momentum.

Newton's 3rd law states that for every force there is another force, equal in size and opposite in direction. Newton's third law measures 2 receivers, in our egg crash challenge we have the wall and the car. In midst of the crash there will be paired forces between the receivers this is when the 2 objects feel the same amount of force caused by each other.

Momentum - A caculated vector quantity of mass in motion it is the product of mass and velocity of an object

Paired Forces - Forces always come in pairs, equal and opposite action-reaction force pairs.

Conservation - refers to something which doesn't change. This means that the variable in an equation which represents a conserved quantity is constant over time. It has the same value both before and after an event.