Final answer:
Mr. Thorne's average velocity while 'walking' 9.7 miles on his hands to school in half an hour is 19.4 miles per hour (A) 19.4 mph.
Step-by-step explanation:
To calculate Mr. Thorne's average velocity when he 'walks' 9.7 miles in half an hour, you would divide the total distance traveled by the total time taken to complete the journey. Since velocity is distance over time, and Mr. Thorne covered 9.7 miles in 0.5 hours, his average velocity is calculated as follows: 9.7 miles ÷ 0.5 hours = 19.4 miles per hour (mph). The correct answer is A) 19.4 mph, which is Mr. Thorne's average velocity as he walks on his hands to school. It indicates that, on average, he covers a distance of 19.4 miles every hour while walking on his hands.