A woman on a 10-speed bicycle travels t 9 ms relative to, Ask an Expert

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A woman on a 10-speed bicycle travels T 9 m/s relative to the ground as she passes a little boy on a tricycle going in the opposite direction. If the boy is traveling at 1 m/s relative to the ground, how fast does the boy appear to be moving relative to the woman?

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Category:- Physics
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