last post of the quarter ^__^

Physics has been a fun course so far. I enjoy learning about how physics relates to me and things that happen every day. For example, driving a car, throwing a ball, or seeing objects resting on tables. However, I am very worried. The labs have been fun and interesting, but were difficult. Also, some of the homework assignments have been tough. I have trouble solving most of the problems. T___T I am worried that physics is going to get harder next quarter. I am already struggling with the concepts we are learning in physics now. >__< My goal for next quarter is to raise my quiz and test grades. If I can do this then hopefully I can get a decent grade for this course. That would be awesome. I’m praying very hard that I do well on the upcoming test on Wednesday. The picture above is a picture of my cousin. I don’t know what you think, but I think he looks very worried, which is why I am using it for this journal entry.

Throwing Paper

Today I decided to clean my room, because people where coming to my house. I started by taking the clothes off the ground and putting them away. Then I began to clear my desk from all the empty water bottles and random pieces of paper. I started launching them into the trash can. I realized at that moment that I was making a projectile with the balls of paper I was throwing. The crumpled piece of paper's horizontal velocity remained the same. However, because of the gravity (-9.8m/s²) the ball of paper falls after reaching its maximum height and gains velocity in the negative direction. When the ball of paper reaches its maximum height, its velocity is zero. In order to find the initial velocity, I must measure change in Y or vertical displacement. I also need to find the time it takes for the paper to reach the trash can after it is released from my hand Once I find those values I can plug it into this equation: ▲y=Viyt + 1/2at² to find the initial velocity.