8) If a person swims 100 meters in the first 40 seconds, crosses 80 meters in the next 40 seconds, and crosses 45 meters in the last 20 seconds. Find the average speed.
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Answer:
Average speed = total distance/total time taken
average speed= 100+80+45/40+40+20
average speed = 225/100
=2.25m/s
Explanation:
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