Ответ:
Объяснение:
S1=S2 = S/2
V1 = 120 км/ч
V2 = 80 км/ч
Vc = ?
t1 = S1/V1 = S / (2*V1)
t2 = S2/V2 = S / (2*V2)
t = t1+t2 = S / (2*V1) + S / (2*V2) = S / (2*120) + S / (2*80) =
= (S+1.5*S) / 240 = S / 96
Vc = S/t = S / (S/96) = 96 км/ч
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Ответ:
Объяснение:
S1=S2 = S/2
V1 = 120 км/ч
V2 = 80 км/ч
Vc = ?
t1 = S1/V1 = S / (2*V1)
t2 = S2/V2 = S / (2*V2)
t = t1+t2 = S / (2*V1) + S / (2*V2) = S / (2*120) + S / (2*80) =
= (S+1.5*S) / 240 = S / 96
Vc = S/t = S / (S/96) = 96 км/ч