Contents

• Page 1. The Problem.
• Page 2. Diagram.
• Page 3. Answer and Solution.
• Page 4. An Interactive Applet for More Practice.

Problem. Let us calculate the resultant (sum) of two two-dimensional vectors ₁ and ₂. The vectors will be specified in terms of their magnitudes v₁ and v₂ and direction angles q₁ and q₂. The angles are measured in the positive sense (counter-clockwise) relative to the horizontal direction pointing to the right (the 'East' direction).

₁ = (v, q)₁ = (100, 60^o) ,

₁ = (v, q)₁ = (130, 140^o) .

In your Notebook, draw the two vectors, roughly to scale, and construct their resultant. When done, go to Page 2 to compare.