Asked by 45467757885
A plane flies on a heading of N50 degrees East at a constant speed of 450 km/h. If the velocity of the wind is 70 km/h on a bearing of S30 degrees East,
what is the velocity (speed and direction) of the plane with respect to the ground?
what is the velocity (speed and direction) of the plane with respect to the ground?
Answers
Answered by
oobleck
a general solution to this problem...
a plane flies on a heading of θ with speed v with a wind blowing from the direction Ø with speed w.
The resultant vector z is
z = <z<sub><sub>x</sub></sub>,z<sub><sub>y</sub></sub>> = <v sinθ,v cosθ> - <w sinØ,w cosØ>
in the direction arctan(z<sub><sub>x</sub></sub>/z<sub><sub>y</sub></sub>)
Now plug in your numbers.
a plane flies on a heading of θ with speed v with a wind blowing from the direction Ø with speed w.
The resultant vector z is
z = <z<sub><sub>x</sub></sub>,z<sub><sub>y</sub></sub>> = <v sinθ,v cosθ> - <w sinØ,w cosØ>
in the direction arctan(z<sub><sub>x</sub></sub>/z<sub><sub>y</sub></sub>)
Now plug in your numbers.
Answered by
oobleck
oops. arctan(z<sub><sub>y</sub></sub>/z<sub><sub>x</sub></sub>)
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