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Kayla M.

asked • 02/03/16

Who wins the race? By how much time?

Two children who are bored while waiting for their flight at the airport decide to race from other end of the 20m long moving sidewalk to the other & back.  Philippe runs on the sidewalk at 2.0m/s (relative to the sidewalk).  Renee runs on the floor at 2.0m/s.  The sidewalk moves at 1.5m/s relative to the floor.  Both make the turn instantly with no loss of speed.
A) Who wins the race?
B) By how much time does the winner win?

1 Expert Answer


Michael L. answered • 02/04/16

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