Vectors and scalars

Question

What is the northerly component of the wind blowing at 15m/s from the south east

Answer 1

When investigating vectors using the rectangular vector notation or graphical analysis,we usually assign two perpendicular directions as the positive directions.That way, the way we indicate the opposite directions by a negative sign.

Answer:

The question asks for the northerly component.as such, we will be taking the northward direction as the positive direction.

The northward component is thus

V_y= -15 sin 45° m/s

= -15(0.7071067812) m/s

= -10.6 m/s

The northward component of the velocity is -10.6 m/s.