a)d1+d2=d
b)d1=v1t1
c)d2=v2t1
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1)s1+d=s2
2)s1=v1t2
3)s2=v2t2
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substituind in a valorile cu b si c si in 1 cu valorile 2 si 3 primim sistemul
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/ d=v1t2+v2t2 / d=v1t1+t1(v1t2+d)/t2
-| => -| =>
\ v1t2+d=v2t2 \ v2=(v1t1+d)/v1
=> v1=4m/s , v2=6m/s