John is traveling north at 20 meters/second and his friend Betty is traveling south at 20 meters/second. If north is the positive direction, what are John and Betty's speeds?
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Answer:
i don't understanding this
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Explanation:
John North 20m
Betty South 20m
condition:If North is positive!
therefore, John is +20&Betty is -20(if North+ then South-)
Speed of both=20-20
=0.
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