 Problemsolving (one BIG question broken down into smaller, more manageable pieces).
 WebAssign Workshop
 HW:
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A dog leaves home and travels north at 3 m/s for 20 s. He sees a cat and chases it north at 12 m/s for 5 s. The cat climbs a tree and the dog stops and barks at it for 10 s. He then turns back for home and trots in that direction at 2 m/s for 15 s. He sits down.
 How far and in what direction is he from home?  what total distance did he cover?  what was his average speed?  produce a (NEAT, ACCURATE) postion vs. time graph of this event.
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