Ответ:
Объяснение:
s1=s2=s/2
t1=s1/v1=s/(2*v1)
t2=s2/v2=s/(2*v2)
vcp=(s1+s2)/(t1+t2)=(s/2+s/2)/(s/(2*v1)+s/(2*v2)=2/(1/v1+1/v2)=2*v1*v2/(v1+v2)
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Verified answer
Ответ:
Объяснение:
s1=s2=s/2
t1=s1/v1=s/(2*v1)
t2=s2/v2=s/(2*v2)
vcp=(s1+s2)/(t1+t2)=(s/2+s/2)/(s/(2*v1)+s/(2*v2)=2/(1/v1+1/v2)=2*v1*v2/(v1+v2)
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