Friday, September 25, 2009

Physics in tennis


When I had a tennis lesson last weekend, I learned something really cool and important. My coach made me do a drill in which I had to stay low to the ground with my knees bent and stay like that while I hit many balls. It turned out that this helped more balls to stay in because it was easier to rotate and hit the ball when already in a low position. By staying low for the entire drill, I felt the burn in my legs, but it also helped to shorten my recovery time, and then shorten the time it took to get to the next ball. I figured out that staying low, but still in a somewhat comfortable position, makes it faster for you to move to the next ball because you are already in a position in which you can push off from the ground right away to go to the next ball. If you were standing upright, you would have to bend your legs to push off really quickly to be able to get to the next ball in a short amount of time. If you don’t push off fast enough, which is often the case, it takes longer to build up the momentum and your acceleration to get to the ball, therefore, it would take longer to get to the ball. In tennis, it’s important that you get to the ball as fast as you can and recover as fast as you can because it’s all about timing the ball and getting into position quickly so that you can hit an aggressive shot.

Sunday, September 20, 2009

First Impressions

Somehow, what I wrote for the first blog didn't come out. So I guess I have to rewrite it. I expected this course to be hard, but not quite as hard as it turned out to be. I'm not used to reading everything and then learning it all on my own. I wasn't expecting for there to be so little lectures and so many labs. I also find the homework kind of challenging, and it can take a while to figure out some of the more difficult problems. I'm starting to adjust and will have to if I want to continue this course. I'm a bit anxious about how difficult it's going to get, especially if the pace of the course gets faster. I'm also worried about how hard the tests will be, since they are worth 60% of our grade, so it's important to do well on them. However, I'm excited to see if I can survive this course and learn Physics at a very high level. It is also cool when you figure out a problem that is tough and doesn't involve only plugging and chuggin equations. I hope to survive this course and be able to work through it the entire year. I hope that I will be able to continue it despite how rigorous it is because I'm always up for a challenge.

First Impressions


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