What is A Vector?

A vector is a quantity that is specified by both a magnitude and a direction. Magnitude is muchness and direction is in which way something is going. An example of vector would be arrow. An arrow points in directions and tells you how far you can go. You usually find arrows on signs, directing people towards places. Along with the sign, you usually find how far you need to go in the direction that you intend on going. The half arrow above the letter A in my picture is symbolizes that the arrow above is a vector and it’s called boldface.

Running For Days.

My friend Ilihia is such a committed athlete. She always finds time to run either during school or afterwards. Her goal is to run at least three miles per day. However, Ili tells me that throughout the time she runs, she doesn't run at a consistent speed. Sometimes she slows down or speeds up, depending on her mood. In other words this relates to Physics because, Ili changes her acceleration and speed over the period of time she runs. She may run 3 feet per 5 seconds at one point in time and after she gets tired she might run 3 feet per 10 seconds. So if you were to find her average, it wouldn't be accurate because of the fact that she doesn't run at a consistent speed.

More Kinematics

This is a picture of my friends and I at a gymnastics place jumping on a trampoline. This shows Kinematics because each one of us are jumping with different velocities and speeds. Some of us were jumping higher than others, which kept us up in the air for a longer period of time. Some of us jumped quicker than each other, which means we jumped at different velocities. I can calculate how high I jump using the formula d = vt. For example if I jumped up at 1 meter per second squared for 1.5 seconds I would have jumped up 1.5 meters.

Treadmill

Kinematics is the study of how things move. On a treadmill, you have the ability to exercise and stay in the same place at the same time. When you exercise on a treadmill you neither move forward, or backward. The belt underneath you is what moves. You neither gain nor lose distance.  The displacement for exercising on a treadmill will always be 0, because you don’t change position, you can only change the speed or distance. You can also run or jog at constant rates because you control your speed through the belt on the treadmill and you have to keep up with the belt.

Kinematics

 Kinematics is the study of motion. These pictures of my brother relates to Kinematics because he is creating motion when he throws the baseball. In baseball, a pitcher throws a ball to the catcher and the batter of the opposing team has to hit it. The velocity of the pitch (or how fast the ball goes) depends on how hard the pitcher throws it. With physics you can calculate how fast the ball is going. The formula for average velocity is displacement*elapsed time. So if my brother was pitching from a mound that was 60.5 feet away from home plate and it took the ball 3.8 seconds to get there, I can use the formula average speed = displacement*elapsed time to figure out that he throws around 70 miles per hour.

Tape Measure

This is a picture of a tape measure. This is an example of the unit we did because it has to do with measurement. A tape measure is used to measure things. Specifically, this one is used more so for construction, there is another type used for tailoring. It is common that there are metric units on one side and imperial or British units on the other. This applies to physics because people use it to measure the length or width of things so they are able to resize different things or see if they need to make it longer. In physics, they use the metric system to measure things. For instance, we used a meter stick to measure the string part of the pendulum for our lab and a tape measure has the same units you can measure things with.