My Pbl Project

Driving question: What is inertia, how is it related to Newton's 1st Law (the law of inertia), and how can it be demonstrated? Inertia is the force that keeps an object in rest staying in rest or an object in motion staying in motion. Newton's first law states that an object at rest will stay at rest and an object in motion will stay in motion unless a force acts upon it.

Introduction:

Inertia is the quantity in matter (anything you can touch) that lets it stay still if still, or keeps it moving if it is moving. In order to overcome inertia, you would have to apply force to the object. For my project I will be demonstrating Inertia by a variety of five different experiments. One of the demonstrations I will be doing is when you pull a paper off the table really fast when there’s a large class full of water on it. Nothing will happen to the glass with water because no force was applied to it so it stays at rest while the paper is in motion! The rest of my demonstrations I have written bellow with the materials needed to do them as well! My video will show all of these five experiments being demonstrated.

Materials:

(All materials in picture above)

Demonstration 1

• • paper

  • Large glass full of water

Demonstration 2

• • cup

  • index card

  • coin

Demonstration 3

• • Raw egg

  • Hard-boiled egg

Demonstration 4

• toy car

• string

• toilet paper roll

Demonstration 5

• Balloon

• penny

Procedure:

I will show everyone what inertia is by a couple demonstrations. Demonstration three i will need a raw egg and a hard-boiled egg. I will then spin both of them and stop them at the same time. This proves inertia because the yolk inside of the raw egg is still moving even though the egg isn't and the hard-boiled egg isn't moving at all inside or out. Another demonstration I will be doing is one that should be very familiar to everyone. All I will need is a table cloth and a large glass full of water. Instead of the large glass with water I could use glass plates if I want. Then I will place the table cloth on a table and put the glass filled with water on the table. Next all I will do is pull the table cloth off the table as fast as I can. The point of that? It shows inertia because the glass filled with water is still on the table and didn't move even after the table cloth was pulled off. This happens because no force was applied to the glass so it stays at rest. The cloth is obviously in motion because a force was applied to it.

Scientific Principle:

Inertia is related to newtons first law in motion (sometimes called "Galileo's principle") because inertia is what makes an object resist the change in motion. The first law of motion is that the objects in motion tend to stay in motion and objects at rest tend to stay at rest which is basically what inertia is. The principal of inertia no force is required to maintain motion with constant velocity in a straight line, and absolute motion does not cause any observable physical effects. The scientific principal of inertia has to do with the classical physics that are used to describe motion of objects and how they are affected by the forces applied. Mass is the primary manifestations of inertia. Inertia usually refers to an objects "amount of resistance to change in velocity" or to its momentum depending on what you're looking at. Another way to define inertia is that a body moving friction less level surface will continue in the same direction forever at a constant speed unless disturbed. And no inertia is not a force because its a property of an object to resist change in motion.

Safety Regulations:

• • Be careful when using glass in the demonstrations because it can break. So be sure to wear gloves and safety goggles.

  • If you use any hanging or falling objects in your demonstrations, clear all breakable items and your hands or fingers from beneath them before hanging or dropping any objects.

  • Be careful handling raw eggs, as they can break. Be sure to wash your hands after handling any pieces of a broken raw egg.