Vectors

The picture that I took was from a sign on the highway when I was driving to Kaneohe. This shows an example of a vector since a vector is something that shows both direction and magnitude. This specific vector is facing downwards since it’s pointing to a sign directing people in the lane I was in to continue in a straight path. In the picture are actually two vectors, and this relates to what we learned as well about determining whether two vectors are equal because since they are pointing in both the same direction and they are the same size, they are equal vectors. 

Jumping For Joy

This picture shows an example of kinematics because my friends are jumping up with a certain velocity and eventually coming back down with the same velocity they jumped with. Just like in my other blog post, there is a point in time during a jump that your velocity becomes zero due to the gravity factor. If there were no gravity then when we jumped we would never come back down, but since there is, we do come back down but for a split second we are frozen in the air. Also I can tell that my friends are coming down with the same velocity (just in the opposite direction) as they jumped up with because they are starting and stopping at the same level. Just like the volleyball lab we did the other day, after throwing and catching the ball from the same level, we got a pretty accurate reading of its velocity, acceleration and distance. 

Velocity of 0

My picture is one of my dad jumping the highest he could go in a bounce house. This shows an example of kinematics because he’s jumping up with a specific velocity, and when he comes down, he’s returning with the same velocity that he started with. There’s a point in his jump where he’s at a velocity of zero just like when we throw an object in the air. If you take a rock for example, if you throw it up at a velocity of 10 m/s, it’s going to return to the same spot you threw it from at the same velocity (just like bullets do when people shoot them in the air at celebrations). But there’s also a point when the rock reaches a certain point and for that split second, the velocity of it is zero. Just like the rock, my dad isn’t going to be at a velocity of zero for a long time, but during that time frame he is. Also being still for a little while allows for a picture to be taken without becoming blurry. 

Velocity

My picture is of the St. Louis football team running out at the start of the Kamehameha vs. St. Louis football game. This shows an example of velocity because this whole team of football players is running at a fast speed in a certain direction. We learned about the difference between velocity and speed this week, and although this picture exhibits speed, it describes what velocity means because these football players are heading in a specific direction; towards the middle of the field. There is also one man in the middle of the picture (probably one of the coaches) who is heading in the opposite direction of the football players with a different velocity. First of all, he’s heading towards the touchdown zone and he’s not running. The football players may be running at a speed of 25 mph because their so hyped up, but he seems to only be going 3 mph.