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Old 10-20-2003, 09:28 PM   #1
Aimster
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Default How would u do this Physics Problem?

You accidentally throw your car keys horizontally at 8.0 m/s from a cliff 64m high. How far from the base of the cliff should you look for the keys?

How do u do it?
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Old 10-20-2003, 09:29 PM   #2
notfred
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Default RE: How would u do this Physics Problem?

Find how long it takes something to fall 64m.

Multiply that number (in seconds) by 8.
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Old 10-20-2003, 09:31 PM   #3
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Default RE:How would u do this Physics Problem?

law of gravitation?
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Old 10-20-2003, 09:31 PM   #4
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Default RE:How would u do this Physics Problem?

Quote:
Originally posted by: notfred
Find how long it takes something to fall 64m.

Multiply that number (in seconds) by 8.
Correct.
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Old 10-20-2003, 09:31 PM   #5
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Default RE:How would u do this Physics Problem?

you use kinematic equations of motion.

have you written out all of your knowns and unknowns? have you written out your equations? there's only 5 of them that you have to work with. learn how to use two equations and two unknowns.

i know someone else is going to go and solve it for you, but i really wish they wouldn't. that's not the way to learn how to solve problems yourself.
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Old 10-20-2003, 09:31 PM   #6
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Default RE: How would u do this Physics Problem?

64 is the 2nd derivative of the acceleration iirc
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Old 10-20-2003, 09:32 PM   #7
Heisenberg
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Default RE:How would u do this Physics Problem?

Quote:
Originally posted by: ElFenix
64 is the 2nd derivative of the acceleration iirc
What?
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Old 10-20-2003, 09:35 PM   #8
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Default RE:How would u do this Physics Problem?

Okay thanks guys I got it!
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Old 10-20-2003, 11:14 PM   #9
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Default RE:How would u do this Physics Problem?

Quote:
Originally posted by: Aimster
Okay thanks guys I got it!
Yes, because we gave you the answer. Could you do it on a test? Could you do it if the keys were thrown at a 32 degree angle? Could you do it if you were throwing the keys up to a cliff 64 m high?

I'm not trying to attack you, I just don't like how people on here are so ready to just give up the answer, instead of trying to help you learn to do it yourself.
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Old 10-20-2003, 11:18 PM   #10
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Default RE:How would u do this Physics Problem?

Quote:
Originally posted by: Triumph
Quote:
Originally posted by: Aimster
Okay thanks guys I got it!
Yes, because we gave you the answer. Could you do it on a test? Could you do it if the keys were thrown at a 32 degree angle? Could you do it if you were throwing the keys up to a cliff 64 m high?

I'm not trying to attack you, I just don't like how people on here are so ready to just give up the answer, instead of trying to help you learn to do it yourself.
i like green eggs and ham.
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Old 10-20-2003, 11:28 PM   #11
Cyberian
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Default RE:How would u do this Physics Problem?

Quote:
Originally posted by: Triumph
Quote:
Originally posted by: Aimster
Okay thanks guys I got it!
Yes, because we gave you the answer. Could you do it on a test? Could you do it if the keys were thrown at a 32 degree angle? Could you do it if you were throwing the keys up to a cliff 64 m high?

I'm not trying to attack you, I just don't like how people on here are so ready to just give up the answer, instead of trying to help you learn to do it yourself.
Yeah, Aimster!

Someday in real life you are going to accidentally throw your car keys horizontally at 8.0 m/s from a cliff 64m high and you won't have the faintest idea where to look for them and you'll probably starve in the desert.
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Old 10-20-2003, 11:36 PM   #12
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Default RE: How would u do this Physics Problem?

I get new locks for my house and have the dealership make me new keys
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Old 10-21-2003, 03:43 PM   #13
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Default RE:How would u do this Physics Problem?

Quote:
Originally posted by: Heisenberg
Quote:
Originally posted by: ElFenix
64 is the 2nd derivative of the acceleration iirc
What?
no, that was integral

its been a while
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