A man walks at 1 m/s for 60 minutes, he takes rest for 20 minutes and then walks at a speed of 1 m/s for 60 minutes find its average speed.
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Explanation:
Average speed = total distance travelled/total time taken ..... 1 m/s = 60 m/hr,therefore the average speed = 60+60 /3600 +3600 + 1200
= 120/8400
= 0.014 km/hr
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