whatsup physics?!

Alright, so last week wasn't bad.  I didn't have any tests, just a bunch of quizzes, mostly physics.  Alright well this weekend, I ran a cross country meet, but I already used that as an example so I'll talk about tennis.  Today I played a tennis match (doubles), and in this tennis match I thought a lot about physics.  Just in a single point, the velocity of the ball was constantly changing.  My opponent would hit the ball hard, and when I hit the ball, providing more power, the velocity increased even more.  Not only was velocity changing, but the trajectory of the ball was always changing.  Sometimes there would be high lobs, where the ball would travel in a huge arc, and sometimes someone would just smack the ball, and it would seem like the ball had traveled in a straight line.  There were also a lot of different kinds of spins put in play, and i think thats related to physics, but we haven't covered that yet.  Anyways, when I was serving, I thought, how can i serve this ball really fast to the outside corner of the service box?  Well, swing hard, I thought, and aim toward that spot, using topspin.  Unfortunately, I missed, and the ball went into the net.  Too bad I can't be a computer and calculate everything I needed to place the ball perfectly every point.  I'm sure Roger Federer would be ownage at physics.