Ring a race a swimmer completes two laps. the first lap is from point a to b; the second is from b to a. each lap is 60 meters long. the average speed for the first lap is 2 m/s; for the second lap it is 4 m/s.(a) how long does it take the swimmer to complete the race

Total time to complete the race = 45 sec

Explanation:

We have given that each lap is 60 m long

Average speed for the first lap = 2 m/sec

So time taken to complete the first lap

Average speed for second lap = 2 m/sec

So time taken to cover the second lap

So total time to complete the race = 30 +15 =45 sec

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