Answer:
0.158 m/s
Explanation:
Let the first runner be A.
Let the second runner be B.
Given the following data;
Total distance = 100m
Time A = 15.7 seconds
Time B = 16.1 seconds
To find their rate of speed;
For runner A;
Speed = 100/15.7
Speed A = 6.369
For runner B;
Speed B = 100/16.1
Speed B = 6.211 m/s
Next, we find the difference between their speed;
Difference = Speed A - Speed B
Difference = 6.369 - 6.211
Difference = 0.158 m/s.
Therefore, the first runner was faster than the second runner by 0.158 meters per seconds.