Summary of Physics Thus Far!

Acceleration is always the constant force of gravity : 10/ms^2 downward. However, velocity changes as something moves with or against gravity. If something goes upward, against gravity, at a specific velocity it will go up quick, go up slow (as gravity's acceleration takes over), stop briefly, come down slow, then come down quickly. The speed that the object goes up at is the same speed (oposite velocity) that it comes down at when it's at the same position coming down. I demonstrate this concept in the video below. The acceleration of my entire flipping journey is always 10 m/s^2 (because of gravity). Let's say that when I first take off and I'm 0.5 m above the ground I'm moving at 2.5 m/s velocity; when I come down and I'm about to land and I'm 0.5 m above the ground I'm moving at 2.5 m/s.

THROWBACK! In Unit 1 we learned about scientific notation and how it's used to express especially large or small numbers in a more convenient way so you can manage them effectively. You move the decimal point to make the base number between 1 and 10, and how ever many places you moved the decimal place is the exponent above the 10! If the decimal point made a small number a big number, the exponent is negative, if it made a big number a small one the exponent is positive. This reminded me of how we use coins or paper money to express specific amounts of money to make them more manageable. I took the picture below to demonstrate how scientific notation works with the more applicable example of money: 10 pennies, 5 nickels, 4 dimes, and 1 quarter vs. a simple dollar bill.

In conclusion, in learning about physics I really learn about the world around me. When you look beyond the formula's and the confusing concepts, the science behing physics is truly the science of our world.