George walks to a friends house. He walks 750 meters north, then realizes he walked too far. He turns around and walks 250 meter
s south. The entire walk takes him 13 seconds. What is his speed per second?
1 answer:
Answer: 77 m/s in 2 significant figures
Explanation:
Total distance traveled (d) = 750 + 250 = 1000m
Time taken (t) = 13 s
Speed (s) = ?
Now,
s = d/t
s = 1000/13
s = 77 m/s in 2 significant figures
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