Posted by Nick on Thursday, September 17, 2009 at 9:36pm.
There are three vectors involved:
A. the flight vector as yet unknown.
B. The wind at 42 km/h at -20° with respect to the x-axis.
C. the resultant: (0,42) km. from the starting point.
Since the vectorial sum of A and B equals C, you can obtain A by adding C and -B, both of which are known.
i need more help
You will need to know how to add and subtract vectors. Have you done that at school?
There are different methods, depending on what you have learned. It could be graphical by drawing directed arrows and joining them together in the right order. It could be by resolving the vectors into the x- and y-components.
We need to know more about what you are working on to provide more detailed help.
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