Apologia Physical Science--Lesson 1, Module 9

Hola, guys! Olydia (Olivia and Lydia) here! We're starting a blog explaining lessons from our science textbook. which is Apologia's Exploring Creation with Physical Science.
Today's lesson is from Module 9: Motion. The lessons that we will explain are:

• What is motion?
• What is force?
• What is position?
• Is all motion relative?
• What is speed?
• What is velocity?
• What is acceleration?
• What is free fall?

Let's get started!

1. What is motion? Let's give an example. There is a piece of cake five feet away. You want to eat that cake, so you walk over to the cake, and eat it. That is motion. Motion is an object's movement.

2. What is force? Force is the push or pull of an object. Here's an example. You're trying out for baseball. You need to throw the ball, which requires force. It takes force for you to release the ball, in order for it, in turn, to to fly where you want it.

3. What is position? Position is the location of an object. If the position is moving, then the object is in motion. If there's a bowl of fruit in front of you, to you, it isn't moving, right? But if there was a man in space, to him, the bowl of fruit is moving, because the earth is rotating.

4. Is all motion relative? Yes all motion is relative, because of reference point. Go back to the bowl of fruit. You are the reference point. The man in space is also his reference point.

5. What is speed? Speed is how fast an object is moving. The equation for speed is speed= distance/time.

6. What is velocity? Velocity is speed with direction. If an airplane was flying it has to be flying in a certain direction, like north, south, east, or west. The equation for velocity is the same as speed, just add direction.

7. What is acceleration? Back to the baseball. If you threw it up in the air, you're not just using force, you're also using acceleration. Acceleration is the increase of velocity. The equation for acceleration is acceleration= final velocity - initial velocity/ time.

8. What is free fall? Free fall is when an object is moving without any force, only gravity. Think of an apple falling off of a tree. You aren't yanking it off of the tree, gravity just pulls it down.

I think that's all we have for today. Our next lesson will follow Module 10, and it will be about Newton's 3 laws of motion.




           

~Olydia~