Answers

2016-07-07T07:18:28+08:00
Speed, time and distANCE FORMULA....d=st
Sp=Dp/(Tp)..speed wind
Sw=Dw/(Tw)..speed plane
d1=d2;
{Sp +Sw}2={Sp-Sw}2.5;
then we have : Sp=9Sw..............1.)

Ttotal=T1 +T2;
4.5= 1000/[Sp +Sw]  +1000/[Sp-Sw]:...2.)
80Sw=4000
Sw=50:kph
Sp=450 kph


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