Final answer:
To find the walking rate, we convert 2.9 m/s (a brisk walking speed) to feet per minute. It results in approximately 571.78 feet per minute, which is not represented by any of the provided options, suggesting the model in question does not have a realistic physical walking rate.
Step-by-step explanation:
The question pertains to determining the walking rate in feet per minute. To give an accurate answer, we should convert the given example of a brisk walk from meters per second to feet per minute. A brisk walking speed is approximately 2.9 meters per second. To convert this to feet per minute, first convert meters to feet (1 meter = 3.28084 feet), then multiply by 60 seconds to get the rate per minute.
So, 2.9 meters per second equals to 2.9 * 3.28084 feet per second, then multiplied by 60 yields the walking rate in feet per minute.
Calculating this gives us: 2.9 m/s * 3.28084 ft/m * 60 s/min ≈ 571.78 feet per minute. This rate far exceeds the options provided in the question. Therefore, we can deduce that the model does not have a physical walking rate that accurately represents the walking rate of an average person, as none of the options (a, b) align with the typical walking speed.