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i need physics help!

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    04-12-2013, 05:06 PM
  #11
Green Broke
I stil didnt really understand it after I found the answer O_o some things in physics I find easy and other I am sooooooo confused!!! Either way I HATE HATE HATE physics..... >:O

My continuing obstacle is relating horseback riding to physics for my final project.... and the BEST (sarcastic) part of the whole darn thing is that my partner hasnt done crap. She never shows up to school (which the document is shared over the interent so it wouldnt matter), and she hasnt made the effort to talk to the teacher to get directions (she wanst there when we were assigned it)or get the papers!!!!! >:O so I plan to go to the teacher next week and see if I can go with out a partner (which was forced by the way, I love working alone!!) and so she will be in deep manure becasue if you fail the project, you fail the term (like she not failing now or anything....)
The cons of being in all honors classes except for that one and you are forced to be partners with the most useless-school-skipping kids
     
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    04-12-2013, 08:00 PM
  #12
Started
I love physics, especially since I got to use my horse to explain Newton's second law of motion. I got the highest diploma mark in my class for physics 30.
     
    04-12-2013, 08:26 PM
  #13
Showing
Ilovepets, put into layman's terms...in a collision, the larger vehicle would be much less willing to change direction/velocity quickly and, like Brighteyes said, it's the sudden change that does damage to your body.

So, if one person is driving a large truck and another is driving a small car and they hit head on with both traveling approx the same speed, the large truck with simply slow down and continue to move forward where the small car would suddenly be forced to travel in the opposite direction...which would cause more stress and damage on the bodies in the small car.
     
    04-12-2013, 09:14 PM
  #14
Banned
Quote:
Originally Posted by ilovepets    
...
My continuing obstacle is relating horseback riding to physics for my final project...
Just use your imagination. You can calculate the difference in velocity of a horse apple when it hits the ground from a 14 vs. a 16 hand horse; or...you can get fancy and prove the perpendicular force of your weight bouncing up and down on the horse can affect acceleration, but does not affect speed...that should get you an "A"...
     
    04-12-2013, 11:23 PM
  #15
Green Broke
Quote:
Originally Posted by smrobs    
Ilovepets, put into layman's terms...in a collision, the larger vehicle would be much less willing to change direction/velocity quickly and, like Brighteyes said, it's the sudden change that does damage to your body.

So, if one person is driving a large truck and another is driving a small car and they hit head on with both traveling approx the same speed, the large truck with simply slow down and continue to move forward where the small car would suddenly be forced to travel in the opposite direction...which would cause more stress and damage on the bodies in the small car.
whoa.. confusing... :p I am on vacation right now, my brain can't think about this right now

Quote:
Originally Posted by Faceman    
Just use your imagination. You can calculate the difference in velocity of a horse apple when it hits the ground from a 14 vs. a 16 hand horse; or...you can get fancy and prove the perpendicular force of your weight bouncing up and down on the horse can affect acceleration, but does not affect speed...that should get you an "A"...
we don't have to use units, we just have to write a sentence or two of how it applies.
     
    04-13-2013, 12:09 AM
  #16
Started
The super simple explanation is, bigger mass = higher impulse so that means the bigger car will exert a higher impulse on the smaller car. The change in velocity won't be as great for the larger car which will reduce the chance of injury for the driver and passenger.
     
    04-13-2013, 02:21 AM
  #17
Trained
I don't recall what the exact ratio is but google will be your friend on this one. For every 100 extra pounds your odds of serious injury is greatly reduced in a car collision, or in reverse for every 100 pounds removed from a car your chance of serious injury greatly increases. I heard it on the news one night and think the figures came out of the NTSB.
     



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