Final answer:
The maximum speed limit of 70 MPH varies as it depends on state regulations. Each state sets its own limits based on various factors. Speed conversions show that 100 km/h equals approximately 62.14 MPH, and the conversion factor for km/h to m/s is around 0.277778 m/s.
Step-by-step explanation:
The maximum speed limit of 70 MPH does not apply to all interstate highways. The correct answer to the student's question is 3) It depends on the state regulations. Each state has the authority to set its own speed limits on interstate highways, which may be higher or lower than 70 MPH. Factors that affect speed limit settings may include road conditions, traffic flow, and safety concerns.
Regarding the conversion of speed units, to convert 100 km/h to miles per hour (a commonly used speed limit on some interstates), recall that 1 mile is approximately 1.609 kilometers. To find the equivalent in miles per hour, divide 100 km/h by 1.609 km/mi, which gives approximately 62.14 MPH. Similarly, to convert from kilometers per hour (km/h) to meters per second (m/s), there's a standard conversion factor where 1 km/h is equivalent to approximately 0.277778 m/s.