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RWDboy Forums Junkie Location: South Australia Registered: July 2002	Re: Physics problem. Fri, 25 March 2005 12:40 Alex120 -> Why? Okay, this is my LAST effort, if you don't get the picture now then you should never EVER become an engineer/scientist/phsyicist/anything. Picture in your mind a SUPER SUPER slow-mo collision of two identical cars - you are standing on the sidewalk directly looking at where they will impact, one coming from the left, one coming from the right. Focus directly at the point where they collide. Okay freeze frame - the two cars are just touching nose to nose - both are going 50km/h at this point. Press the button for the next frame, the bonnet/bumper is starting to crumple and both cars are slowing down, you can see that the rear of the car is still moving and the cars are squeezing together but the very front part of each car is staying where it is. Next frame, the front of both cars are still static (where they ifirst mpacted) and the car is squashing up, the rear is now moving very slowly - the cars are just crumpling together and the speed has dropped dramatically for both cars - the rears are both moving at bugger all km/h. Finally the come to rest and neither car is crumpling and everything is still. Okay - you can press normal speed now, the accident is over. Nothing to see here. Now in your head, replay that accident, but instead of the car of the left, place a brick wall in it's place and picture the same thing, car is moving at 50km/h from the right and watch super slow mo just as it touches the wall, and skip the frames forward - does anything different happen to the one car? Does it crumple differently or slow down any more rapidly? Does the front of the car move any differently, is the rear of the car squashing up faster/slower than it did in the 2 car accident? DO NOT THINK ABOUT NUMBERS HERE! [Report message to a moderator]

	Subject	Poster	Date
	Physics problem.	Squid	Thu, 24 March 2005 03:43
	Re: Physics problem.	Corona RT142	Thu, 24 March 2005 03:46
	Re: Physics problem.	Squid	Thu, 24 March 2005 03:50
	Re: Physics problem.	Corona RT142	Thu, 24 March 2005 03:50
	Re: Physics problem.	Norbie	Thu, 24 March 2005 03:51
	Re: Physics problem.	Squid	Thu, 24 March 2005 03:58
	Re: Physics problem.	Indi	Thu, 24 March 2005 04:28
	Re: Physics problem.	STR8 2.8	Thu, 24 March 2005 04:32
	Re: Physics problem.	86DRFT	Thu, 24 March 2005 12:27
	Re: Physics problem.	Norbie	Fri, 25 March 2005 07:14
	Re: Physics problem.	Intensevil	Thu, 24 March 2005 04:25
	Re: Physics problem.	Corona RT142	Thu, 24 March 2005 04:31
	Re: Physics problem.	Squid	Thu, 24 March 2005 04:34
	Re: Physics problem.	Indi	Thu, 24 March 2005 04:42
	Re: Physics problem.	BlackMR2	Thu, 24 March 2005 04:32
	Re: Physics problem.	white86	Thu, 24 March 2005 04:44
	Re: Physics problem.	white86	Thu, 24 March 2005 04:51
	Re: Physics problem.	Mookie	Thu, 24 March 2005 04:58
	Re: Physics problem.	bbaacchhyy	Thu, 24 March 2005 05:08
	Re: Physics problem.	IRA11Y	Thu, 24 March 2005 05:39
	Re: Physics problem.	Dust	Thu, 24 March 2005 05:34
	Re: Physics problem.	Norbie	Thu, 24 March 2005 05:39
	Re: Physics problem.	skellator	Thu, 24 March 2005 05:57
	Re: Physics problem.	BlackMR2	Thu, 24 March 2005 05:58
	Re: Physics problem.	IRA11Y	Thu, 24 March 2005 06:04
	Re: Physics problem.	IRA11Y	Thu, 24 March 2005 06:07
	Re: Physics problem.	EnFlaMEd	Thu, 24 March 2005 06:33
	Re: Physics problem.	SPRINTAH!	Thu, 24 March 2005 06:30
	Re: Physics problem.	skellator	Thu, 24 March 2005 06:43
	Re: Physics problem.	SPRINTAH!	Thu, 24 March 2005 07:47
	Re: Physics problem.	IRA11Y	Thu, 24 March 2005 08:13
	Re: Physics problem.	skellator	Thu, 24 March 2005 08:57
	Re: Physics problem.	skellator	Thu, 24 March 2005 06:33
	Re: Physics problem.	RWDboy	Thu, 24 March 2005 06:42
	Re: Physics problem.	skellator	Thu, 24 March 2005 06:54
	Re: Physics problem.	RWDboy	Thu, 24 March 2005 06:49
	Re: Physics problem.	RWDboy	Thu, 24 March 2005 07:20
	Re: Physics problem.	skellator	Thu, 24 March 2005 07:44
	Re: Physics problem.	RWDboy	Thu, 24 March 2005 13:42
	Re: Physics problem.	CrUZsida	Thu, 24 March 2005 08:39
	Re: Physics problem.	CrUZsida	Thu, 24 March 2005 08:59
	Re: Physics problem.	NeiGH	Thu, 24 March 2005 09:51
	Re: Physics problem.	skellator	Thu, 24 March 2005 10:01
	Re: Physics problem.	Alex120	Fri, 25 March 2005 11:49
	Re: Physics problem.	86DRFT	Thu, 24 March 2005 12:22
	Re: Physics problem.	skellator	Fri, 25 March 2005 01:42
	Re: Physics problem.	RWDboy	Fri, 25 March 2005 08:16
	Re: Physics problem.	b1gb3n	Fri, 25 March 2005 02:37
	Re: Physics problem.	skellator	Fri, 25 March 2005 08:40
	Re: Physics problem.	RWDboy	Fri, 25 March 2005 09:10
	Re: Physics problem.	skellator	Fri, 25 March 2005 09:22
	Re: Physics problem.	gabe	Sat, 26 March 2005 00:46
	Re: Physics problem.	skellator	Sat, 26 March 2005 00:58
	Re: Physics problem.	RobertoX	Wed, 30 March 2005 05:40
	Re: Physics problem.	skellator	Wed, 30 March 2005 06:35
	Re: Physics problem.	RWDboy	Fri, 25 March 2005 10:42
	Re: Physics problem.	Alex120	Fri, 25 March 2005 11:45
	Re: Physics problem.	RWDboy	Fri, 25 March 2005 12:40
	Re: Physics problem.	skellator	Fri, 25 March 2005 22:50
	Re: Physics problem.	RWDboy	Sat, 26 March 2005 01:47
	Re: Physics problem.	skellator	Sat, 26 March 2005 02:16
	Re: Physics problem.	gabe	Sat, 26 March 2005 02:59
	Re: Physics problem.	RWDboy	Sat, 26 March 2005 01:53
	Re: Physics problem.	RWDboy	Sat, 26 March 2005 03:21
	Re: Physics problem.	IRA11Y	Sat, 26 March 2005 03:29
	Re: Physics problem.	Squid	Tue, 29 March 2005 03:48
	Re: Physics problem.	RWDboy	Sat, 26 March 2005 03:29
	Re: Physics problem.	RWDboy	Sat, 26 March 2005 03:33
	Re: Physics problem.	skellator	Sat, 26 March 2005 03:41
	Re: Physics problem.	RWDboy	Sat, 26 March 2005 04:13
	Re: Physics problem.	skellator	Sat, 26 March 2005 04:24
	Re: Physics problem.	RWDboy	Sat, 26 March 2005 04:47
	Re: Physics problem.	IRA11Y	Sat, 26 March 2005 05:04
	Re: Physics problem.	skellator	Sat, 26 March 2005 05:26
	Re: Physics problem.	skellator	Sat, 26 March 2005 06:06
	Re: Physics problem.	tom210	Sat, 26 March 2005 06:52
	Re: Physics problem.	skellator	Sat, 26 March 2005 06:56
	Re: Physics problem.	RWDboy	Sat, 26 March 2005 07:02
	Re: Physics problem.	skellator	Sat, 26 March 2005 07:05
	Re: Physics problem.	tom210	Sat, 26 March 2005 07:19
	Re: Physics problem.	jackel	Sat, 26 March 2005 07:23
	Re: Physics problem.	skellator	Sat, 26 March 2005 07:39
	Re: Physics problem.	tom210	Sat, 26 March 2005 07:28
	Re: Physics problem.	Norbie	Sat, 26 March 2005 09:47
	Re: Physics problem.	skellator	Sat, 26 March 2005 10:10
	Re: Physics problem.	Norbie	Sat, 26 March 2005 10:12
	Re: Physics problem.	skellator	Sat, 26 March 2005 10:21
	Re: Physics problem.	EldarO	Sat, 26 March 2005 11:37
	Re: Physics problem.	Norbie	Sun, 27 March 2005 02:02
	Re: Physics problem.	EldarO	Tue, 29 March 2005 16:41
	Re: Physics problem.	tom210	Sat, 26 March 2005 12:46
	Re: Physics problem.	RWDboy	Sat, 26 March 2005 12:53
	Re: Physics problem.	skellator	Sun, 27 March 2005 02:36
	Re: Physics problem.	RWDboy	Sun, 27 March 2005 03:15
	Re: Physics problem.	RWDboy	Tue, 29 March 2005 04:41
	Re: Physics problem.	skellator	Tue, 29 March 2005 05:50
	Re: Physics problem.	RWDboy	Tue, 29 March 2005 12:07
	Re: Physics problem.	skellator	Tue, 29 March 2005 21:05
	Re: Physics problem.	79rollaboy	Tue, 29 March 2005 21:20
	Re: Physics problem.	RobertoX	Wed, 30 March 2005 00:19
	Re: Physics problem.	RWDboy	Wed, 30 March 2005 00:42
	Re: Physics problem.	skellator	Wed, 30 March 2005 04:40
	Re: Physics problem.	RobertoX	Wed, 30 March 2005 04:49
	Re: Physics problem.	skellator	Wed, 30 March 2005 04:57
	Re: Physics problem.	RWDboy	Wed, 30 March 2005 13:47

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