a man walk on a straight road from his home to market 3 km away with a speed of 60 km per hour he instantly terms and walked back home with a speed of 90 km per hour what is the average speed and average velocity of the men over the interval of time 0 to 40 minutes?
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Answer:
Average velocity is total displacement upon total time. But his initial and final position are same, so his displacement is zero.
Hence his average velocity is zero.
Explanation:
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