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The force of friction is given in the scenario:
Force = 500 Newton
and the mass of the runner is 60 kg
To find the acceleration we need to use the relation between force, mass, and the acceleration of the object:

Where 'F' represents the force, 'm' represents the mass, and 'a' represents the acceleration.
Plugging the value of variables we get:

Solving for 'a' (acceleration) we get:
Newton/kilogram or meters/ second squared
So the acceleration of the runner is 8.33 meters/ second squared.
Answer:
6
Step-by-step explanation:
Answer: 5 meters.
Step-by-step explanation:
When a circle circumscribed about a rectangle,
Then the diameter of the circle = Diagonal of the rectangle,
Here, the length of the rectangle = 8 cm,
And, the width of the rectangle = 6 cm,


Thus, the diameter of the circle = 10 meters
⇒ Radius of the circle = diameter/2 = 10/2 = 5 meters.