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skellator
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Location:
Coffs Harbour, NSW
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November 2004

Re: Physics problem.

Thu, 24 March 2005 08:57

Quote:

What does hitting a stationary car have to do with anything???
Of course the "damage" will be less when hitting a stationary car, you will be pushing the other car along, coming to a steady stop.

ah, sorry, i thought you said hitting a car at 50km/h, but you actually said a brick wall. but in that less damage bit, i was assuming the car would stay put and not crumple, much like the brick wall...hmmm...

anyway, this is the way i like to put it:

a car travelling towards a concrete wall at 100km/h has a velocity, relative to the wall, of 100km/h

a car travelling towards another car, both doing 50km/h, also has a velocity, relative to the other car, of 100km/h

think about it, if you're standing next to a 50km/h road, you see cars go past at a certain, apparent speed
if you're driving along a 50km/h road (at 50km/h, of course, cos you're a sensible driver), you see other cars going the other way at what seems to be a faster speed than when you watched them from a stationary position

btw, cruzsida, put it this way, if two cars collided, both travelling 50km/h, would it cause the same amount of collective damage as if one car hit a concrete wall at 100km/h?

edit: squid, do you want to have a say in this at all? i mean it is your thread Razz

[Updated on: Thu, 24 March 2005 08:59]

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Subject Poster Date

Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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
Read Message 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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