1.

A person swims 100 m in the first 40 s, 80m in the next 40 s and 45 m in the last 20 s.what is the average speed?

Answer» AVERAGE speed = TOTAL distance / Total TIME
= (100 + 80 + 45) / (40 + 40 + 20)
= 225 / 100
= 2.25 m / s


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