Recent content by Gordanier

Yes you are correct with the proper notations, thank you for that. Also, thanks for taking the time to answer. I'm sure tonight would have gone much easier if I had the textbook, but I opted to pay $40 on ebay instead of $200 in the bookstore, and it hasn't arrived yet :) So that is why I am...

Nope. Lets say you drop a ball from your hand. The acceleration is 9.8m/s^s downward, but when the ball is in your hand it is not moving. (unless of course you are swinging your arm). So at initial, the very beginning, there is no velocity. Velocity changes due to acceleration.

Ok that is much better :) Completely different than what I had originally imagined it, lol. Ok, so the issue is, the ball is accelerating as it rolls down ramp A, once it reaches the bottom and begins horizontally rolling, its velocity is the same, not 0. Meaning the time between ramp A and...

I'd suggest to Bill to use a better graphing program o.O Seriously though :P What is the graph representing?

Right, well what you are looking at is at rest. At rest, 0, the velocity is 0 because it is not moving yet. Since it hasn't moved yet, position is 0 as well. As time goes on, and the object accelerates to produce a velocity, both its velocity and position change. Hopefully this helps.

EDIT: Doh, I misread what he was required to do. My mistake. Cheers

Hmm, is that all the information you are given? You could find an average acceleration until the race is over, or an average velocity, but I don't think you can find what you are asking based on just the above information. Maybe I'm wrong and missing something or overcomplicating it, but...

Well you are given time, which is equal to 2.52 seconds. The distance is what you are trying to figure out, and I assume that "r" represents the speed of light? So "r" is a constant which you should be able to look up in your textbook if you do not know it. Then you just fill in what you know...

As with regards to your direction issues, once you have your three sides figured out, use your trig laws (soh cah toa). If you've never heard of them, it goes: "soh" - sin = opposite / hypotenuse "cah" - cosine = adjacent / hypotenuse "toa" - tangent = opposite / adjacent And you should...

Hi everybody, thank you in advance for all comments/help. First off, I know I am new here, but a friend of mine is a casual on this board and he suggested I try it for help. I have just begun a 2nd year university introductory to mechanics class, and I have an assignment due tomorrow. I...