The force of friction between the car's tires and the road is 5250 N
Centripetal force is the force that is perpendicular to an object moving in circular motion. It is given by:
F = mv²/r
where m is the mass of object, v is the velocity and r is the radius of circle.
Given that m = 700 kg, v = 30 m/s, r = 120 m, hence:
F = mv²/r = 700 * 30²/120 = 5250 N
The force of friction between the car's tires and the road is 5250 N