1. Calculate the distance and displacement of a body which is circulating in a orbit of radius 20 m. 2. If a bus travels a certain distance in 20km/h speed and another certain amount of distance in 40 km/h speed then what is the average speed of the bus?
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(1) 20 (2) 26.666666.....
Explanation:
(2) distance are in two scenarios so use the formula average speed =2*v1*v2/v1+v2 put the value 2*20*40/20+40=1600/60 =26.666666
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