Question

An athlete swims the length if 50m pool in 20s and makes the return trip to starting point in 22s.Determine the average speed and velocities a. the first half of the trip b.second half of the trip c. Round trip
speed = distance/time
velocity = displacement/time
so, assuming the 1st half is in a positive direction,
(a) speed = 50/20 = 2.5 m/s
velocity = +50/20 = +2.5 m/s
and so on

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