A car weighing 9800 N moves around a circular track of 70 m in 60 s.

a. What is the speed or the car?
b. What is the centripetal acceleration?
c. What is the centripetal force?
d. What is the coefficient of friction between the tires and the road?

The distance around a circle is diameter*PI.

speed = distance/time

centripetal acceleration = v^2/r

To solve these problems, you'll need to use the formulas for speed, centripetal acceleration, and centripetal force.

a. To find the speed of the car, you can use the formula: speed = distance/time.

Given that the car moves around a circular track of 70 m in 60 s, you can plug these values into the formula:

speed = 70 m / 60 s

Therefore, the speed of the car is 1.17 m/s.

b. To find the centripetal acceleration, you can use the formula: centripetal acceleration = v^2/r.

Given that the speed of the car is 1.17 m/s, and the radius of the circular track is not provided in the question, you can't directly find the centripetal acceleration.

c. To find the centripetal force, you can use the formula: centripetal force = mass * centripetal acceleration.

Unfortunately, the mass of the car is not given in the question. Without the mass, you cannot calculate the centripetal force.

d. To find the coefficient of friction between the tires and the road, you need more information than what is provided in the question. The coefficient of friction can depend on various factors, including the condition of the tires, the type of road surface, and the weather conditions.

Therefore, without additional information, it is not possible to determine the coefficient of friction between the tires and the road.