Question

A person travelling on a straight line moves with a uniform velocity V1 for a distance X and with a uniform velocity V2 for the next equal distance. The average velocity V is given by ​

Answer 1

Answer:

2/v = 1/v1 + 1/v2

Explanation:

Time taken during first phase = x/v1 and during second phase = x/v2. Total distance =2x Total time taken = (x/v1)+(x/v2) = x(1/v1 +1/v2) Average velocity =Total distance/Total time taken v = 2x / x(1/v1 +1/v2) =>v = 2/(1/v1 +1/v2) => 2/v = (1/v1 +1/v2) {Multiplying both sides by (1/v1 +1/v2)/v }Read more on Sarthaks.com - https://www.sarthaks.com/51382/person-travelling-straight-uniform-velocity-distance-uniform-velocity-equal-distance