Navin travels along a straight road 500m long and returns back 100m. Find his average speed and average velocity if he takes a time of half an hour?

Total distance travelled=500 +100=600 m
Time taken=1/2 hour=30 min=1800 sec
Average speed=600/1800=0.33 m/s

Total displacement=500-100=400 m
Time taken=1800 sec
Average velocity=400/1800=0.22 m/s

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