After re-reading, I realize I may have to make a few assumptions. One being the positive direction of angular motion, if we take it to be counterclockwise, then I believe that the answer would be -i hat.
The question is specifically asking for the unit vector, or bearing of the velocity in positive Y direction, which is exactly where I'm confused. Is it really just testing whether or not I know that the positive Y direction is the j hat unit vector? That seems a little too easy for this level...
Oh, actually this question is multiple choice and I cannot give K hat as an answer. hmm...there is always the E.) there is not enough information given to determine the answer option, but physics books hate resorting to that.
Ah, I was just getting confused by what that really meant, but now (after some sleep, and your question) it seems a lot clearer. I for some reason believed that the magnitude of rotation was transposed onto every plane.
Homework Statement
A rigid body is rotating about a fixed axis through the origin. The angular velocity is \omega\hat{k} where \omega is positive. What is the unit vector in the direction of the velocity of a point on the body located on the positive y axis?
The Attempt at a...
Thank you, that was very helpful, I didn't realize that the adjacent side was really just equivalent to initial velocity because the perpendicular velocity would have no effect on it. Thanks again!
Homework Statement
A 4200-kg rocket is traveling in outer space with a velocity of 120 m/s toward the Sun. It needs to alter its course by 23.0^{}0, which can be done by shooting its rockets briefly in a direction perpendicular to its original motion. If the rocket gases are expelled at a...