Physics question, vector a⃗?
Vector a⃗ has components ax= -3 m/s^2 and ay= +4m/s^2.
What is the magnitude of a⃗? what is the direction of a⃗? Give an example with respect to one of the coordinate axes?
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magnitude is root of sum of squares = sqrt(9+16)
direction is 'arctan (ay/ax)' = arctan (4/(-3)) wrt x-axis.