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Page 2 - physics homework (need help)

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physics homework (need help) Science forum discussing scientific research and developments in artificial intelligence, astronomy, cybernetics, physics, paleontology, alternative energy sources, and supercomputers. Comment on the newest breakthroughs.

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  Trader Rating: 0 · #16  
Old January 16th, 2005, 11:00 PM
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When we are asking without everything but the speed of gravity, the bullet will hit the ground at the speed it left. But when we bring terminal velocity into effect, it makes sense. As well, we hafta look at the hailstone itself. A hailstone has less mass and density than a bullet, as well, it is affected by air resistance. Also the bullet was in a theroetical scenario, henseforth the bullet will travel for a very long time. As well, most bullets travel at a higher velocity than 450fps so this is quite probably for a theoretical point of view...
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  Trader Rating: 0 · #17  
Old January 17th, 2005, 04:47 PM
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Quote:
Originally Posted by jkabaseball
ummmm... yea, I"m right when we neglect any other varible like air. SO if you throw a rock straight up, then it is slower down at the rate of gravity, then once it reaches it's maximum height, it falls back down at the same force of gravity. Hail in real life has a terminal velocity, so it won't kill you.


Well yes you're right in the fact that it would had there been no friction. So I guess the question is whether the problem is asking the question with or without friction. I assumed that it would be including friction. Its been 4 years since I've sat down in a physics class. It's not fresh in my head

Alien dude, you do have a text book right? The answers are in there.
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Old January 17th, 2005, 04:53 PM
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Argh! i should know all this crap :/ i hate science.
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Old January 17th, 2005, 05:15 PM
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i think he said neglect air resisteance. I'm in physics right now. The class is a joke, every thing is so damn easy, I have missed tw o points all semester, and got 6 bonus.
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Old January 17th, 2005, 05:29 PM
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Are you in high school?
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  Trader Rating: 2 · #21  
Old January 17th, 2005, 05:44 PM
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yea
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Old April 17th, 2005, 10:33 AM
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Post I need help with my physics homework
With what formula do you use to find maximum speed, when you have the height and the mass.
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Old April 17th, 2005, 11:24 AM
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You know, there really are text books for this stuff. Its all in there.

You'll learn more in the text book or from your teacher rather than us here online. Ask your teacher.
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Old April 17th, 2005, 03:41 PM
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Didnt we have a no Homework policy here?!
Not sure if we changed rules recently!!
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Old April 17th, 2005, 04:10 PM
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You're right, it's one of those talked about, not in the rules, rule! NO HOMEWORK. No one ever did my homework, but me...same goes here.
We also get to giggle at a necromancer, bringing back to life a thread that died in January!!!!!!!
I did send him a warning...he has 2 posts and they both necromance & ask for help on his homework.
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Old April 22nd, 2005, 12:25 PM
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Im sorry. I will not do it again.
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Old April 22nd, 2005, 12:29 PM
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