Question

A person is moving in a straight line wih speed 10m/s for 1/6 th of total distance and 20m/s for 1/3th of total distance and for the rest of time he is moving with 45m/s ,then find out average velocity​

Answer 1

Answer:

45 + 20 / 2

65 / 2

3.5 is the average velocity

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Answer 2

Answer:

Explanation:

average velocity = total DISPLACEMENT/ total time taken

let the total displacement be x

time = displacement/velocity

therefore for 1/6 of total displacement, time =   (1/6*x ) / 10--------------------Eq 1

and for 1/3 of total displacement time = ( 1/3*x ) / 20----------------------------Eq 2

total time = Eq 1 +Eq 2 = x/30

therefore average velocity = x / (x/30) = 30 m/s