Vector a has a magnitude of 8 units and makes an angle of, Ask an Expert

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Q1. Vector A has a magnitude of 8 units and makes an angle of 45.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. (Using graphical methods), find (a) vector sum A + B and (b) vector difference A -B.

Q2. A 1700 {rm kg} car travelling at a speed of 25 {rm m/s} skids to a halt on wet concrete where f_k = 0.60. How long are the skid marks?

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