Question

A body moving along straight line covers a distance
in three equal parts with speed 2 m/s. 3 m/s and
4 m/s, then its average speed is
(1)12m/s
(2)13÷12m/s
(3)36÷23m/s
(4)12÷13m/s​

Answer 1

Explanation:

ans 36/13

solution in above photo