Journal Entry #1
Figuring out what to do for my pbl (project based learning) was the most frustrating thing ever. First of all I have a hard time choosing between things. My topic is Inertia which is pretty easy but when I was doing my research there wasn't that much information explaining the demonstrations. I know that inertia is related to Newtons 1st law of motion but trying to find different demonstrations was a little hard because I have to do six different demos. The only easy part about it was my materials I need because you can buy it at the grocery store. One of my demos is pulling a tablecloth as fast as I can while there is a big glass of water on top of it. So I basically have all those materials at home and school.
Journal entry #2
For my first demonstration I will be demonstrating how an object in motion will stay in motion and how an object at rest will stay at rest. When I flick a index card off of a cup it will be in motion while the quarter that was on top the index card falls into the cup staying at rest. My second demonstration I will be using a glass cup and a paper. The cup will be placed on the paper and I will pull the paper really fast! The cup will be at rest even though the paper was in motion. My third demo I will only be using two eggs. One egg has to be raw and the other egg has to be boiled. Then I will spin both of the eggs at the same time and stop them at the same time. That shows inertia because the boiled egg completely stopped but the raw egg didn't completely stop because of the yolk inside is still spinning. This is because the yolk is in motion and wants to stay in motion. The fourth demonstration I will put a penny inside a balloon and then blow up the balloon. Whenever I start spinning the balloon the penny will spin as well! Then when I stop spinning the balloon the penny keeps spinning because it is in motion. Finally for my last demonstration I will be using a car, string, and a toilet paper roll. I will put the roll on top of the car and pull the string slowly. Whenever I pull the string slowly the roll stays on the car but whenever I pull the string fast the roll stays in the same spot while the car is in a different spot because no force was applied to it. So those are all my demonstrations I will be doing to show what inertia is.
Journal Entry #3
My third demo I will only be using two eggs. One egg has to be raw and the other egg has to be boiled. Then I will spin both of the eggs at the same time and stop them at the same time. That shows inertia because the boiled egg completely stopped but the raw egg didn't completely stop because of the yolk inside is still spinning. This is because the yolk is in motion and wants to stay in motion. It’s just like when you’re driving your car and you slam the brakes really hard, your body will go forward because it was in motion and it wants to stay in motion. This proves that inertia is just what makes an object resist the change in motion.