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SPRINTAH! Regular Location: Sydney Registered: January 2003	Re: Physics problem. Thu, 24 March 2005 06:30 Two cars colliding while travelling at 50km/h in opposite directions IS NOT the same as hitting a wall at 100km/h The main thing to remember when doing calculations with the two cars is that one car is doing +50km/h , the other one is doing -50km/h. This therfore means that if you add the velocities, you get 0. so.... hitting a brick wall at 50km/h will be the same as hitting a (identical) car travelling in the opposite direction, going 50km'h. common sense also shows this... you are going from 50km/h to 0km/h in a set time, being the time taken for the crumple zone to well... crumple. this is regardless of what you hit. if you hit another car, the other cars crumple zone doesn't "really" affect your cars, as it has its own car to take care of. if you hit something with a greater mass or velocity then its a different story, as you will most likely be going backwards after the collision Richard [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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