Ответ:
Объяснение:
V1 = 30 м/с
V2 = 40 м/с.
S1 = S/3
S2 = S*2/3
Vc = ?
t1 = S1/V1 = S / (3*30) = S / 90
t2 = S2/V2 = S*2 / (3*4) = S / 60
t = t1+t2 = S/90 + S/60 = S*(2+3) / 180 = S / 36
Vc = S/t = S / (S/36) = 36 м/с
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Ответ:
Объяснение:
V1 = 30 м/с
V2 = 40 м/с.
S1 = S/3
S2 = S*2/3
Vc = ?
t1 = S1/V1 = S / (3*30) = S / 90
t2 = S2/V2 = S*2 / (3*4) = S / 60
t = t1+t2 = S/90 + S/60 = S*(2+3) / 180 = S / 36
Vc = S/t = S / (S/36) = 36 м/с