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#32
08-07-2007, 03:42 PM
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Re: Need help devising an easy physics question that sounds really har
[ QUOTE ]
I'm more interested in how you measure total force in Jellos. [/ QUOTE ] 
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#33
08-07-2007, 03:47 PM
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Re: Need help devising an easy physics question that sounds really har
Okay, my post has seemingly resulted in mass confusion, so I'll work through my answer.
Force is mass times acceleration, so if you know the acceleration the Jello imparts on the dog, you get force. First, I determined the speed the dog was traveling at when it reached the Jello: Vf^2 = Vi^2 + 2ad a = 10 (I kept it simple) Vi = 0 d = 20 Vf^2 = 400 so Vf = 20. I used the same equation to determine the acceleration of the dog in Jello: Vf^2 = Vi^2 + 2ad Vf = 0 Vi = 20 d = 10 0 = 400 + 20a Therefore, a = -20 m/s. Then, it's just the force equation: F = ma m = 20 a = 20 F = 400
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#34
08-07-2007, 03:50 PM
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Re: Need help devising an easy physics question that sounds really har
[ QUOTE ]
Okay, my post has seemingly resulted in mass confusion, so I'll work through my answer. Force is mass times acceleration, so if you know the acceleration the Jello imparts on the dog, you get force. First, I determined the speed the dog was traveling at when it reached the Jello: Vf^2 = Vi^2 + 2ad a = 10 (I kept it simple) Vi = 0 d = 20 Vf^2 = 400 so Vf = 20. I used the same equation to determine the acceleration of the dog in Jello: Vf^2 = Vi^2 + 2ad Vf = 0 Vi = 20 d = 10 0 = 400 + 20a Therefore, a = -20 m/s. Then, it's just the force equation: F = ma m = 20 a = 20 F = 400 [/ QUOTE ] what flavor jello?
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#35
08-07-2007, 03:50 PM
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Re: Need help devising an easy physics question that sounds really har
[ QUOTE ]
[ QUOTE ] Okay, my post has seemingly resulted in mass confusion, so I'll work through my answer. Force is mass times acceleration, so if you know the acceleration the Jello imparts on the dog, you get force. First, I determined the speed the dog was traveling at when it reached the Jello: Vf^2 = Vi^2 + 2ad a = 10 (I kept it simple) Vi = 0 d = 20 Vf^2 = 400 so Vf = 20. I used the same equation to determine the acceleration of the dog in Jello: Vf^2 = Vi^2 + 2ad Vf = 0 Vi = 20 d = 10 0 = 400 + 20a Therefore, a = -20 m/s. Then, it's just the force equation: F = ma m = 20 a = 20 F = 400 [/ QUOTE ] what flavor jello? [/ QUOTE ] lime ldo
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#36
08-07-2007, 04:01 PM
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Re: Need help devising an easy physics question that sounds really har
The ASPCA has just been notified of this abuse of a dalmatian.
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#38
08-07-2007, 05:17 PM
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Re: Need help devising an easy physics question that sounds really har
[ QUOTE ]
[ QUOTE ] I wanna see this magical 80 mph fly [/ QUOTE ] I also have a spherical cow you may be interested in. [/ QUOTE ] Nice.
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#39
08-07-2007, 05:22 PM
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Re: Need help devising an easy physics question that sounds really har
[ QUOTE ]
Okay, my post has seemingly resulted in mass confusion, so I'll work through my answer. [/ QUOTE ] The post caused confusion becaues every single part that could be wrong was wrong. Even your walkthrough to correct the confusion was completely wrong.
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#40
08-07-2007, 05:23 PM
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Re: Need help devising an easy physics question that sounds really har
[ QUOTE ]
Okay, my post has seemingly resulted in mass confusion, so I'll work through my answer. Force is mass times acceleration, so if you know the acceleration the Jello imparts on the dog, you get force. First, I determined the speed the dog was traveling at when it reached the Jello: Vf^2 = Vi^2 + 2ad a = 10 (I kept it simple) Vi = 0 d = 20 Vf^2 = 400 so Vf = 20. I used the same equation to determine the acceleration of the dog in Jello: Vf^2 = Vi^2 + 2ad Vf = 0 Vi = 20 d = 10 0 = 400 + 20a Therefore, a = -20 m/s. Then, it's just the force equation: F = ma m = 20 a = 20 F = 400 [/ QUOTE ] Gravity doesn't stop doing work on the dog once it enters the jello.
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