Final answer:
The ratio of the truck's net centripetal force to the car's net centripetal force is 2:1.
Step-by-step explanation:
The ratio of the truck's net centripetal force to the car's net centripetal force can be determined using Newton's second law, which states that force is equal to mass times acceleration, F = ma. The centripetal force is the force that keeps an object moving in a circular path.
For the car, the net centripetal force is given by Fc = mac, where m is the mass of the car and ac is the centripetal acceleration. The centripetal acceleration can be calculated using the equation ac = v² / r, where v is the speed and r is the radius of the circular turn.
For the truck, the net centripetal force is given by Fc = 2mac, where 2m is the mass of the truck. Since the speed v is the same for both the car and the truck, the ratio of the truck's net centripetal force to the car's net centripetal force is 2:1.