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AuthorTopic
gabe
Forums Junkie


Location:
Perth
Registered:
June 2002
Re: Physics problem. Sat, 26 March 2005 00:46 Go to previous messageGo to previous message
skellator wrote on Fri, 25 March 2005 17:22


use the formula v1 + - v2
and v2 = -50 (opposite direction)
so v1 + - v2
= 50 + - -50
= 100



I was going to piss fart around with my year 12 Physics book but I thought I would just quote this bloke instead.

Ok consider this....
A car traveling at 50km/h and another car traveling at 60km/h. In the same direction.
The cars will collide at 10km/h. You just subtract the 2 away from each other.

Because the cars are traveling in opposite directions you need to add a 'negative' into the formula.

If you are driving at a wall at 50km/h the distance between you and the wall is decreasing by 50km/h.
Now if you are driving at 50km/h, and another car is driving at you at 50km/h, the distance between the cars is decreasing at 100km/h.

This isn't that hard....
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SubjectPosterDate
Read Message   Physics problem. SquidThu, 24 March 2005 03:43
Read Message   Re: Physics problem. Corona RT142Thu, 24 March 2005 03:46
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Read Message   Re: Physics problem. BlackMR2Thu, 24 March 2005 05:58
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Read Message   Re: Physics problem. IRA11YThu, 24 March 2005 06:07
Read Message   Re: Physics problem. EnFlaMEdThu, 24 March 2005 06:33
Read Message   Re: Physics problem. SPRINTAH!Thu, 24 March 2005 06:30
Read Message   Re: Physics problem. skellatorThu, 24 March 2005 06:43
Read Message   Re: Physics problem. SPRINTAH!Thu, 24 March 2005 07:47
Read Message   Re: Physics problem. IRA11YThu, 24 March 2005 08:13
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Read Message   Re: Physics problem.  gabeSat, 26 March 2005 00:46
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Read Message   Re: Physics problem. tom210Sat, 26 March 2005 12:46
Read Message   Re: Physics problem. RWDboySat, 26 March 2005 12:53
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Read Message   Re: Physics problem. RWDboyWed, 30 March 2005 00:42
Read Message   Re: Physics problem. skellatorWed, 30 March 2005 04:40
Read Message   Re: Physics problem. RobertoXWed, 30 March 2005 04:49
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Read Message   Re: Physics problem. RWDboyWed, 30 March 2005 13:47
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