Final answer:
The correct answer to the maximum speed limit for a pickup truck on a U.S. highway at night is not stated in the provided material, but typical U.S. highway speed limits range from 65 to 70 mph during the day, potentially lower at night.
Step-by-step explanation:
The correct answer to the maximum speed limit for a pickup truck on a U.S. highway at night is not explicitly provided in the reference material. However, referring to common traffic rules, the speed limit on U.S. highways can vary by state and time of day.
Most interstate highways have speed limits ranging from 65 to 70 miles per hour during the day, which could be different at night due to visibility and safety concerns. An ideal speed is described as the maximum safe speed at which a vehicle can turn on a curve without relying solely on the friction between the tire and the road.
This consideration is part of setting speed limits. Since the references do not state a clear number, the answer must be based on typical highway speed limits, which are around 35 miles per hour in urban areas to 70 miles per hour on rural interstates during daylight, and sometimes lower at night.
The speed limit on some interstate highways is roughly 80 km/h. To convert this to meters per second, we need to divide by 3.6 since there are 3.6 seconds in an hour. So, 80 km/h divided by 3.6 is approximately 22.2 m/s.
To convert this value to miles per hour, we need to multiply by the conversion factor 2.237. So, 22.2 m/s multiplied by 2.237 is approximately 49.7 mi/h.