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CBSE Class 11-science Answered

a body travels from a to b at 40m/s and from b to a 60m/s .calculate the average speed
Asked by selsha ks | 21 Sep, 2011, 12:00: AM
answered-by-expert Expert Answer
In such type of question use the formula 
av. speed= 2. 40.60/(40+60)=48m/s
Answered by | 21 Sep, 2011, 11:19: PM
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