To accurately calculate the g-force experienced during a turn, we need additional information such as the radius of the turn or the curvature of the exit ramp. Without that information, it's not possible to provide an exact value for the g-force experienced.
However, I can provide some general information about g-force and how it relates to acceleration. One g-force is equivalent to the acceleration due to gravity, which is approximately 9.8 meters per second squared (m/s²) or 32.2 feet per second squared (ft/s²). When experiencing one g-force, you feel the same sensation as being at rest on the Earth's surface.
During a turn, the acceleration experienced can be expressed in terms of g-force. The centripetal acceleration, which keeps an object moving in a curved path, can be calculated using the formula:
a = v² / r
where "a" is the acceleration, "v" is the velocity, and "r" is the radius of the turn. In this case, if you were traveling at 40 mph (which is approximately 17.9 m/s) on a turn with an unknown radius, it's not possible to calculate the g-force without that radius information.
Keep in mind that exceeding the recommended speed limit for a turn can result in a higher g-force experience than intended. It's always advisable to follow posted speed limits and drive safely to ensure your well-being and the safety of others.