1.

A body moving along straight line covers a distancein three equal parts with speed 2 m/s, 3 m/s and4 m/s, then its average speed is(1) 12 m/s(2)13/12 m/s(3) 36/13 m/s(4)12/13 m/s​

Answer»

Answer:36/13

Explanation:

Let the total distance be 3X.

The time REQUIRED are x/2 , x/3 and x/4 respectively .

AVG SPEED = total distance/total time

= 3x/x/2+x/3+x/4

=3x/13x/12

=36/13 m/s



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