Answer:
The value is
Explanation:
From the question we are told that
The speed of the marathon runner is
The distance from the distance from the finish is
The speed of the bird is
Generally the time taken for the runner to reach the finish is mathematically represented as
So the distance covered by the bird is
Slope of a curve Y plotted against X is mathematically given as
now here we can see that if similarly graph is plotted against distance and time then slope is given as
here we can say that above is ratio of small distance and very small interval of time.
so here we can say that this ratio of distance and time for very small interval of time is known as instantaneous speed of the object which is falling freely under gravity.
So here slope of the graph will represent the speed at a given instant.
