Answer:
Time taken, t = 50 seconds
Explanation:
It is given that,
Distance covered by the runner, d = 400 m
Average speed of the runner, v = 8 m/s
Let t is the time taken by the runner to complete the race. It can be calculated using the concept of average velocity. The total distance covered divided by total time is called average speed of the runner as :
\(v=\dfrac{d}{t}\)
\(t=\dfrac{d}{v}\)
\(t=\dfrac{400\ m}{8\ m/s}\)
t = 50 seconds
So, the time taken by the runner to complete the race is 50 seconds. Hence, this is the required solution.
