- Motion in two dimensions involves vector quantities:
displacement (x, y) velocity (vx, vy) acceleration (ax, ay)

- Under ordinary circumstances, we can separate the components of a 2-D problem, creating two independent 1-D problems. We can use the equations of motion in 1-D to solve each of those simpler problems.
- Occasionally, you may not have enough information (three different kinematic quantities) to determine the motion of an object in one of the dimensions; try to solve the motion in the other dimension, because often that will provide one extra piece of information.

Viewgraphs

Q: What is the ship's displacement from time t=0 seconds to t=20 seconds? Q: What is the ship's final velocity? Express in component form, and as a magnitude and angle.

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