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Question

A man walks on a straight road from his home to a market 2.5 km away with a speed of 5kmh1. Finding the market closed, he instantly turns and walks back home with a speed of 7.5kmh1. What is the magnitude of average velocity?

A
10 m/s
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B
20 m/s
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C
35 m/s
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D
0 m/s
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