Question

Vectors and 2-D kinematics

Dx= 7.14m and Dy = -7.55m

What is the direction and magnitude of the vector

Answer 1

10.4 and 313.4

Step-by-step explanation:

the person above said multiple answers and these are the correct ones

Answer 2

10.39 OR 10.4 m at 46.6° downward or clockwise with +xaxis or 313.4° in anticlockwise direction with + X-axis

Step-by-step explanation:

D = SQUARE ROOT OF(7.14^2 +(-7.55)^2)

D = 10.39 m

as Dx is positive and Dy IS NEGATIVE hence vector is in 4 th quadrant

tan α= 7.55/7-14

= 1.057

α = 46.6° downward or clockwise with +xaxis

or α =313.4° in anticlockwise direction with + X-axis