How many minutes will the second swimmer need to catch up with the first if the distance between them is 70 m

| August 3, 2021 | education

How many minutes will the second swimmer need to catch up with the first if the distance between them is 70 m, the speed of the first is 45 m / min and the second is 80 m / min. And will the second swimmer be able to catch up with the first if he swims at the same speed as the first? And if he swims at a speed of 52 m / min?

A) The speed of the second swimmer is 80 m / min, and the speed of the first swimmer is 45 m / min, which means the second catches up with the first at a speed: 1) 80 – 45 = 35 (m / min) speed difference Initially, the distance between swimmers is 70 m and the speed difference is 35 m / min, then the second swimmer will catch up with the first in: 2) 70: 35 = 2 (min) the second will catch up with the first
B) If swimmers swim with the same speed, then the difference in their speeds is equal to “0”: 1) 45 – 45 = 0 (m / min) speed difference So no one can catch up with anyone.
C) If the second swimmer swims at a speed of 52 m / min. Then we solve, as in solution A) 1) 52 – 45 = 7 (m / min) difference 2) 70: 7 = 10 (min) the second will catch up with the first



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