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| Physics is just what is this. |
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| Mateo:
I've been having trouble on this problem in physics since monday. I've been given no other problems like it, I have found no formulas I could use to solve it, and to me it just seems all around impossible. I'm sure if someone better at this kind of thing than I am would point out the error of my ways I'd see I'm wrong, but for now this is just ridiculous. --- Quote ---003 (part 1 of 3) 2.0 points A hockey puck sliding on a frozen lake comes to rest after traveling 190 m. If its initial velocity is 1.6 m/s, what is its acceleration if that acceleration is assumed constant? Answer in units of m/s2. 004 (part 2 of 3) 2.0 points How long is it in motion? Answer in units of s. 005 (part 3 of 3) 2.0 points What is its speed after traveling 145 m? An- swer in units of m/s. --- End quote --- The bold is what I need to know now. The acceleration is already known: -0.0067368421 (Sadly, I've memorized this number.) There are only 2 ways I can see to set up this problem. --- Code: ---Solving for Vf Vi=1.6m/s d=145 a= -0.0067368421 --- End code --- or --- Code: ---Solving for Vi Vf=0 d=45 a= -0.0067368421 --- End code --- The assignment is due at 10:00 tonight through the intrenets, so ye... Kind of in a hurry. |
| tay104:
You should probably have asked your teacher for help. Also, did you check for the formula in your textbook? |
| Mateo:
Well every formula I have, every formula every person I've asked has had, and every formula I could find in my book really didn't help me with this. I mean the one I did find where the things I had fit it turned out to be some ridiculous answer. If you ask me I probably forgeted up the setup. Also the main reason I hate these damn online assignments is because my printers a bitch which makes it really difficult to ask the teacher for help. :/ |
| FlyGuy45:
Doing, one sec. I think your acceleration should say -.0067.... using DeltaX=Vt=90.63 |
| Mateo:
--- Quote from: FlyGuy45 on September 24, 2009, 09:33:52 PM ---Doing, one sec. I think your acceleration should say -.0067.... using DeltaX=Vt=90.63 --- End quote --- D:< forget I wrote down and memorized the wrong acceleration. you are correct my good sir. I can probably solve it now. Oops. Nope no I can't. Man I loving fail. I guess it doesn't really matter I'll just get it wrong and keep this 1 assignment at a C- instead of an A-. |
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