What are the x and y components of a velocity vector of magnitude 1.00 x 10^2 km/h and direction of 240?

Answer 1

If the 240 is degrees clockwise from north,
x = 100 sin 240 = -100 sin 60 = -86.6
y = 100 cos 240 = -100 cos 60 = -50.0

The +x axis is East(angle 90) and the -y axis (angle zero) is North. South (-y) is angle 180. Angle 240 is 60 degrees west of South.