Pictorial Model When first solving a problem, our initial concern should not be with specific numbers and calculations, but with simply understanding the information in a useful way. The Pictorial Model is a good way to do this. A Pictorial Model should include: - A sketch of the situation, showing each object
- at the beginning of the motion,
- the end of the motion,
- and at any point in between where the character of
the motion changes.
- A coordinate system that you impose on the problem, including a choice of th origin, the axes, and the positive direction.
- Symbols, on the sketch, to show position, velocity, and time with subscripts for each time an object is shown on your sketch. Also, show symbols for other relevant quantities such as mass
- Arrow indicating the direction of the acceleration
vector or vectors. Write
a = 0 if the acceleration is zero. - A Table listing the values for all quantities given in the problem or that can be found quickly using geometry.
- A list of the unknown quantities you have been asked to find.
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