Answer:
Step-by-step explanation:
To solve this problem, we need to use the formula for centripetal force:
F = (mv^2) / r
Where:
F = centripetal force
m = mass of the object
v = velocity of the object
r = radius of the circular path
Assuming the mass of the runner is 70 kg, we can plug in the given values and solve for the centripetal force:
F = (70 kg)(8.8 m/s)^2 / 25 m
F ≈ 217.6 N
Therefore, the centripetal force required to keep the runner moving in a circular path with a radius of 25 m and a speed of 8.8 m/s is approximately 217.6 N.