Question

a motor vehicle travel the first third of a distance at a speed of V1 is equal to 10 kmph the second third at the speed of V2 is equal to 20 kmph and the last third at a speed of V 3 is equal to 60kmph. determine the mean sped of the vehicle over the entire distance s.​

Answer 1

Explanation:

average speed(v)=

$\frac{3v1v2v3}{v1v2 + v2v3 + v3v1}$

by using the above formula you will get the mean speed as 1860km/hr