Question

1.(arrow above letter a pointing to the right) and (arrow above letter b pointing to the right) have the same direction, and they both have a magnitude of 6. What must be true about(arrow above letter a pointing to the right)and(arrow above letter b pointing to the right)?
They are equal and parallel.
~ They are opposites, but not parallel.
They are opposites and parallel.
They are equal, but not parallel.

2.A plane is flying due east with a velocity of 90 m/s. The wind is blowing out of the north at 4 m/s. What is the magnitude of the plane’s resultant velocity? Round your answer to the nearest tenth.
86.0 m/s
~89.9 m/s
90.1 m/s
109.9 m/s

I think these are right but then again i could be completely wrong. Please check.

Answer 1

why not just specify that a and b are vectors?

Then the problem is:

vectors a and b point in the same direction, and have magnitude 6.
answer: equal and parallel.


sqrt(90^2+4^2) = 90.088 ~ 90.1