Final answer:
The lack of symmetry in forces in the fundamental laws of motion results in the observed fact that you can "feel" it when you slam on the brakes in a car or the motion of a roller coaster. This is due to the lack of centripetal force, causing the sensation of being pushed away from the center of the turn.
Step-by-step explanation:
The lack of symmetry in forces in the fundamental laws of motion results in the observed fact that you can "feel" it when you slam on the brakes in a car or the motion of a roller coaster. Specifically, it is the lack of centripetal force that causes this sensation.
When you turn a corner in a car, your body wants to continue moving in a straight line according to Newton's first law of motion. However, the car is turning off this straight-line path, resulting in the sensation of being pushed away from the center of the turn. This feeling is attributed to a fictitious force known as the centrifugal force.
Furthermore, the sharper the curve and the greater your speed, the more noticeable this effect becomes.