A body travelling along a straight line traversed one-third of the total distance with a velocity vl. The remaining part of the distance was covered with a velocity v2 for half the time and with velocity v3 for the other half of time. The mean velocity averaged over the whole time of motion is
a. 3v1 (v2+v3) / 2v1+ v2 + v3
b. 3v1 (v2+v3) / 4v1+ v2 + v3
c. v1 (v2+v3) / 4v1+ v2 + v3
d. v1 (v2+v3) / v1+ v2 + v3
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Explanation:
A body travelling along a straight line traversed one thired of the total distance with a velocity 4ms-10. The remaining part of the distance was covered with a velocity 2ms-1 for half the time and with velocity 6ms-1 for the other hald of time .
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