A particle covers half of its total distance with speed, v1 and the rest half distance with speed, v2. Its average speed during the complete journey is
A
v1v2v1+v2
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B
2v1v2v1+v2
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C
2v21v22v21+v22
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D
v1+v22
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Solution
The correct option is C2v1v2v1+v2 Vav=S+SSV1+SV2=2V1V2V1+V2