Question

An airplane flies with a velocity of 750 kilometers per hour, 30.0° south of east. What is the magnitude of the eastward component of the plane's velocity?

Answer 1

`v_e ~~ 649.5` kph

Explanation:

If the velocity if the plane is `v`, the eastward component of the velocity `v_e` is derived from the fact that `v_e/v = cos(30^o)`

Then `v_e = vcos(30^o)`

`v_e = 750cos(30^o)`

`v_e ~~ 649.5` kph