Module 3: Two-Dinensional Vectors

Question 1

Define Two-Dimensional Vectors

Answer 1

Motion that occurs in a plane

Question 2

What is the formula for Ay (y-component for ‘A’)

Answer 2

Ay = A * sin(θ)

Question 3

What is the formula for Ax (x-component for ‘A’, the magnitude)

Answer 3

Ax = A * cos(θ)

Question 4

How to subtract vectors graphically.

Answer 4

Flip the subtracted vector so it points in the opposite direction. Now add that vector to the first. Now determine the final vector from the beginning of the first vector to the tip of the second vector.

Question 5

What’s the formula for the angle of a vector?

Answer 5

Angle = tan^-1( Ay / Ax )