Final answer:
The rear wheels of a vehicle do not follow the same path as the front wheels, especially in sharp turns. When you negotiate an ideally banked curve at the correct speed, you shouldn't feel thrown to the side. Newton's first law applies when a car moves at a constant velocity down the street.
Step-by-step explanation:
When a vehicle turns, the rear wheels do not follow the exact same path as the front wheels due to a phenomenon known as offtracking or understeering. Instead, the rear wheels follow a tighter curve than the front wheels, which is more noticeable the longer the vehicle is or the sharper the turn. This is evident when trucks or buses navigate turns and must make wider initial swings to accommodate their rear wheels' paths.
As to the question of whether you feel yourself thrown to either side when you negotiate a curve that is ideally banked for your car's speed, the answer is no. The banking of the curve is designed to counteract the lateral force that throws objects to the side, allowing the centripetal force to pull a vehicle into the curve without causing discomfort to the passengers. The force exerted on you by the car seat is directed towards the center of the curve, helping to maintain your position without feeling thrown to the side.
In regards to Newton's first law, this law certainly applies when your car moves at a constant velocity down the street. Newton's first law, also known as the law of inertia, states that an object will remain at rest or move at a constant velocity unless acted upon by an external force. Since there's no change in velocity which indicates no external net force, the law holds true in this situation.