James covers a distance of 8 meters in the first second of a 100 meter race. Then, he sprints at a speed of 9 meters per second. How far is James from the finish line 9 seconds after the race has started?.

Using the formula:

d = r x t

9 sec after the race started is 8 sec after

he started sprinting

d=9.8

d=72

So, he has gone 8 + 72 = 80 m

That means he is 100 - 80 = 20 m from the finish line.

Putting into a formula:

Let,

d = distance from the finish line after 9 sec

d=100 - (9 (9-1)) - 8

d = 20 m