Ответ:
s1=v1t1=7.6*20=152 м
s2=v2t2=9*36=324 м
V=s1+s2/t1+t2=152+324/20+36=8.5 м/с
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Ответ:
s1=v1t1=7.6*20=152 м
s2=v2t2=9*36=324 м
V=s1+s2/t1+t2=152+324/20+36=8.5 м/с