Answer :
Final answer:
When driving at highway speeds (approximately one mile per minute), scanning 20-30 seconds ahead means scanning roughly 1/2 to 1/3 of a mile in front of your vehicle. This corresponds to Response C in the multiple-choice question.
Explanation:
The subject pertains to the understanding of motion, velocity, and distance, making it a physics-related question. When you're driving at highway speeds like 50, 60, 70 miles per hour, you're covering approximately one mile per minute. If you scan 20-30 seconds ahead, you're effectively scanning 1/2 to 1/3 of a mile ahead, because 20-30 seconds is 1/2 to 1/3 of a minute. Therefore, the accurate answer is c. About 1/2 mile.
To further explain the concept, let's consider some examples. Suppose you're driving at 60 miles per hour and need to scan 20-30 seconds ahead. In terms of distance, you'd realize that if you're moving at 60 mph, you travel one mile in one minute (60 seconds). Consequently, for 20-30 seconds, you'd cover about 1/3 to 1/2 mile down the road.
This concept is similar to understanding the idea of instantaneous speed (the speed at a specific moment in time, as indicated by a car's speedometer) compared to average speed (total distance traveled over total time).
Learn more about Scanning Distance While Driving here:
https://brainly.com/question/31722902
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