Physics help please?

Question

A 1650 kg car drives around a flat 180 m diameter circular track at 30 m/s. What is the magnitude and direction of the net force on the car? 

Answer 1

The mass of the car = 1650 kg.

Diameter of the circular Track = 180m

Radius = D/2 = 90 m.

Speed of the car = 30 m/sec.

The net force is the centripetal Force along the curved path.

Fnet = mv²/r

Fnet = (1650 * 30²) / 90

Fnet = 16500 N

Fnet = 16.5 kN.

Therefore Net force on the car  is 16.5 kN.