Treść zadania
Autor: jojo876 Dodano: 17.2.2011 (15:53)
Pociąg jechał cały czas z taką samą prędkością. Przejechał most, który ma 200m. w 1 min. Pociąg przejechał obserwatora na moście w czasie 12 sek. Jakiej długości był ten pociąg ?
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kikilol 17.2.2011 (16:59)
200m - 1 min. ( 1 min = 60 s.)
200m - 60 s / : 5 ( bo 5 * 12 = 60 )
40 m - 12 s
ODP : pociąd miał 40 m długości
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