Answer:
F = GMm / r²
from Newton's law of gravitational attraction
in the same direction as the displacement vector and the motion
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



If only I was smart then I could help you :/ no but like for real im madddd dumb sorry :(