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A man walks for 1 minute at a speed of 1...

A man walks for `1` minute at a speed of `1 m s^(-1)` and then runs for `1 min` at a speed of `3 ms ^(-1)` along straight track, What is the average speed of the man?

Text Solution

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Total distance covered `=V_(1)t_(1) + V_(2)t_(2)=1xx60xx3xx60+3xx60=4xx60 m =240 m`
Total time taken `=t_(1) +t_(2) =60 +60 =120s`, ? Average speed `=(240)/(120) ms^(-1) =2 ms^(-1)`
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