Recent content by princeton_wu

I mulled over it last night and I finallly got it. My problem stemmed from the fact that I didn't realize that a t vs θ graph is a velocity graph). Thanks Tim! :smile:

sorry, I'm confused too :-p If you use t=14 and plug it in the original position vector, shouldn't the J-component of the position vector be 0? Reasoning being that for θ to be 0, the J-component has to be 0? thanks for your patience tiny tim!

i mean the r vector; shouldn't the J-component of the r-vector be 0 @ t=14? this way, the angle @ t=14 would be 0.

Homework Statement http://imgur.com/wNusHOw Homework Equations I have the solutions and how they did it. THey took the deriv for the velocity vector, and then using t=0 and t=14, they found e=3.5 and f=-0.125 The Attempt at a Solution I understand the math, but I don't understand...

Wow I am in the same boat as you. But I'm 33 and medicine is getting a bit boring (same old stuff, long hours and GOOD PAY but just plain mind-numbing work). I'm not sure if I'd give up my salary though, but I do want to consider maybe doing something engineering-related (not even sure if that's...