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A girl joos from one end A to other end B of a straight 250m road in 1min40sec. She then turn around and 50 m back to point C in 30sec. Find average speed and average velocity in jogging from A to C |
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Answer» TOTAL DISTANCE covered by girl(s) =250m+50m =300m total time TAKEN(t) =1min40sec+30sec =130sec average speed=s/t =300/130 =2.307m/s NOW, DISPLACEMENT of girl=250m-50m =200m total time taken=130sec average velocity=total displacement/total time taken =200/130 1.53m/s |
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