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closing speed

Polish translation: prędkość względna w chwili zderzenia


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13:18 Feb 3, 2012
English to Polish translations [PRO]
Tech/Engineering - Other / raport z wypadku
English term or phrase: closing speed
Head-on collision:

The closing speed was said to have been between one hundred and one hundred and twenty miles per hour.
IwonaWoj
Polish translation:prędkość względna w chwili zderzenia
Explanation:
Na podstawie:
Rekonstrukcja wypadku i zdarzenia drogowego
autorzy: Kazimierz Jan Pawelec, Tadeusz Diupero
http://tnij.org/o9ba

Jeżeli obydwa samochody poruszały się, to względna.
Jeżeli jeden z nich nie poruszał się, to po prostu prędkość w chwili zderzenia.
Selected response from:

Andrzej Mierzejewski
Poland
Local time: 21:52
Grading comment
3 KudoZ points were awarded for this answer



Summary of answers provided
4 +1prędkość względna w chwili zderzenia
Andrzej Mierzejewski
3prędkość końcowa
Michał Cyfert
3 -1prędkość sumarycznaRobert Foltyn
2prędkość zbliżaniaFirebeard
Summary of reference entries provided
ref.Polangmar

Discussion entries: 8





  

Answers


12 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): -1
prędkość sumaryczna


Explanation:
Chyba tak to się nazywa.

Robert Foltyn
Local time: 21:52
Works in field
Native speaker of: Native in PolishPolish
PRO pts in category: 81

Peer comments on this answer (and responses from the answerer)
neutral  Crannmer: jako, ze prędkości przy zderzeniu czołowym nie sumują się, nie oczekiwałbym tego wyrażenia w (fachowym) raporcie z wypadku
1 hr

disagree  Polangmar: Czy jeśli pojazd jadący z pręd. 100 km/h zderzy się z ziarenkiem piasku podczas huraganu wiejącego z naprzeciwka z prędk. 100 km/h, to powiemy, że prędkość sumaryczna zderzenia wyniosła 200 km/h? Może w sensie czysto matematycznym, ale nie praktycznym.
10 hrs
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21 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5
prędkość końcowa


Explanation:
jest trochę wyników w google'u

Michał Cyfert
Local time: 21:52
Native speaker of: Native in PolishPolish
PRO pts in category: 15
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2 hrs   confidence: Answerer confidence 2/5Answerer confidence 2/5
prędkość zbliżania


Explanation:
Coś mi świta z zadań z fizyki, ale nie ręczę głową.

Firebeard
Poland
Local time: 21:52
Native speaker of: Native in PolishPolish
PRO pts in category: 4
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2 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +1
prędkość względna w chwili zderzenia


Explanation:
Na podstawie:
Rekonstrukcja wypadku i zdarzenia drogowego
autorzy: Kazimierz Jan Pawelec, Tadeusz Diupero
http://tnij.org/o9ba

Jeżeli obydwa samochody poruszały się, to względna.
Jeżeli jeden z nich nie poruszał się, to po prostu prędkość w chwili zderzenia.

Andrzej Mierzejewski
Poland
Local time: 21:52
Native speaker of: Polish
PRO pts in category: 454

Peer comments on this answer (and responses from the answerer)
agree  Crannmer: z takim sformułowaniem można się zgodzić
19 hrs
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Reference comments


10 hrs
Reference: ref.

Reference information:
Road Myths: Physics of a head-on collision
The myth is that if two cars travelling at the same speed, say 50km/hr and collide head-on, the effect and damage is the same as one car colliding with a solid, immovable object at 100km/hr. I've heard this several times but it makes physics buffs cringe because it's false.
At first it seems to make sense since the closing speed would be double at the moment of impact but what's being overlooked is Newton's "Third Law of Motion", which states "The mutual forces of action and reaction between two bodies are equal, opposite and collinear." In its more common form it's known as "For every action there is an equal and opposite reaction". With that in mind, if two objects traveling at the same speed are collided head-on, the energy released would be evenly and oppositely distributed between both objects. Therefore if both are traveling at X, the closing speed would be X times 2 but since equal and opposite forces will apply (both forward and back), the energy released will still equal to a single vehicle colliding with a solid object at speed X.
http://ca.autoblog.com/2010/11/21/road-myths-physics-of-a-he...

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Note added at 11 hrs (2012-02-04 00:32:22 GMT)
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The third test was to collide two of the remaining vehicles into each other head-on, with each traveling at 50 mph (closing speed of 100 mph) and the damage suffered to each car was the same as the single car slammed into the cement slab at 50 mph. Even the hosts of the show were surprised at the results because they were believers of the myth too... or at least up until this point anyway.
http://ca.autoblog.com/2010/11/21/road-myths-physics-of-a-he...

Polangmar
Poland
Native speaker of: Native in PolishPolish
PRO pts in category: 366
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