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Thread: Need some physics help

03142014, 03:37 AM #1
Need some physics help
Well my teacher has failed to explain this stuff. So we (yes, 4 of us) are stuck on all of these.
We get answers, but they don't seem...right. You know?
Anyway. I took some pics. If you can't tell what they say, let me know and I'll type it all up.

03142014, 05:07 AM #2
First of all, get a list of all your formulas for physics (v(t) = what, a(t) = what, etc.).
Then for each problem, 1. draw a diagram and label various parts and 2. take note of what you do and don't have. Then it just becomes simple equation solving.
For example, number 3. mentions an incline; there are formulas specifically for dealing with physics on an incline.
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03142014, 02:49 PM #3

03142014, 03:54 PM #4
Need some physics help
Listen use the reference table list all the givens and find a formula that fits. If you take your time and try you will probably get it right. So like I said list all the givens and list what you need to find and look in the tables for the right formula. Also remembering that gravity can be used in certain equations as acceleration could be useful as well. Also if you are doing velocity you can assume v1 is zero if the question states that the object is dropped from rest. For example in number four of the second picture they give you distance and time and angle. The angle doesn't really matter in that one they used it to throw you off. To find time just do v= d\t and then solve for t which is time which has a unit of seconds in this case. Sometimes you will need to use multiple formulas in one problem as well to solve what they ask for so just make sure to read carefully list everything down and stare at your reference tables lol
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1Last edited by MerkShot; 03142014 at 04:01 PM.
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