Ria sees a bird outside her bedroom window. She says the bird moved 40 m East, 30 m North and 60 m west before it disappeard. What was the displacement of the bird while Ria was watching it?
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Expert's answer
2021-10-13T16:56:40-0400
First, find displacement in both vertical (northward) and horizontal (eastward) directions:
DN=30 m,DE=40−60=−20 m.
Second, find the magnitude of the resultant with Pythagorean theorem:
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