Question
A person completes half of its his journey with speed v1 and rest half with speed v2 . The average speed of the person is
Options :
v = (v1+v2)/2
v = 2v1v2/(v1+v2)
v= v1v2/(v1+v2)
v= √(v1v2)
Answer :
v = 2v1v2/(v1+v2)
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