A runner completes one round of a circular track of diameter 400m in 40 secs.what will be the distancecal and displacement respectively atcthecend of 2 mins 20 secs
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diameter of track = 400 m
radius=200 m
distance covered in 40sec=2*22/7*200
distance covered in 1 sec= 2*22/7*200*1/40
8800/7*1/40
distance covered in 140 sec=8800/7*1/40*140
4400m
so total distance= 4400 m
and no. of revolutions = 3.5
so displacement=400 m
radius=200 m
distance covered in 40sec=2*22/7*200
distance covered in 1 sec= 2*22/7*200*1/40
8800/7*1/40
distance covered in 140 sec=8800/7*1/40*140
4400m
so total distance= 4400 m
and no. of revolutions = 3.5
so displacement=400 m
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