A person swims 100 m in the first 40 s, 80 m in the next 40 s and 45 m in the last 20 s. what is the average speed?
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total distance = 100+80+45 = 225
total time = 40+40+20 = 100
so,
average speed = total distance / total time
average speed = 225 / 100
so.,
average speed = 2.25 m/s
total time = 40+40+20 = 100
so,
average speed = total distance / total time
average speed = 225 / 100
so.,
average speed = 2.25 m/s
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