An airplane flies with a velocity of 750. kilometers per hour, 30.0 o south of east. What is the magnitude?
An airplane is flying with a velocity of 750 kilometers per hour at an angle of 30.0 degrees south of east. What is the magnitude of the eastward component of the plane's velocity?
2 Answers
draw the vector on an x,y grid
call pos x east and pos y north
so the vector will be 30 deg below the x axis
from the end of the vector draw perpendiculars to the x and y axes
now use trig to find the length of the x part of the rectangle you have drawn
I have a calculator where I can enter r,theta and punch a button to get x,y and get a value close to 650
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