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Стася333
@Стася333
July 2022
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определите среднюю скорость движения тела, если 1 участок пути 800м тело двигалось со скоростью 36км/ч, а 900м со скоростью 54км/ч
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sokolovvovikn
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Vср=S/t
S=S1+S2
t1=S1/V1=800/10=80 c
t2=900/15=60 c
Vср=800+900/80+60=12,1 м/с=43,6 м/с
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Vср=S/tS=S1+S2
t1=S1/V1=800/10=80 c
t2=900/15=60 c
Vср=800+900/80+60=12,1 м/с=43,6 м/с