An athlete runs in a circular path with a radius of 14m. The athlete completes 10 rounds in 10 minutes. How do I calculate his speed in m/s?

To know how far he runs, you first have to calculate the circumference of the circle. The formula for circumference is 2(pi)(r). So 2(3.14)(14) = 87.92. Since he runs ten rounds, you have to multiply the circumference by 10: 87.92 x 10 = 879.2 (879 rounded) Next, it says he completed the run in 10 minutes, but the answer needs to be in seconds, so convert by multiplying 10 x 60 = 600. Now, you can set up the speed ratio: s = d/t; s = 879/600 Finally, simplify the ratio by dividing 879/600 = 1.47. So his average speed was 1.47 m/s