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a person walks first at a constant speed of 4.90 m/s along a straight line from point a t...
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Physics, 04.09.2019 07:20 blackdmnd7485
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a person walks first at a constant speed of 4.90 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.90m/s. (a) what is her average speed over the entire trip? (in m/s)
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