Question

A car travels with speed 3 ms-1 for the first half
distance of the journey and with speed 6 m s -1 for
the remaining half. What is the average speed of
the entire journey?
[NCERT Pg. 42]
(1) 6 m s-1
(2) 18 m s-1
(3) 9 m s-1
(4) 4 ms-1

give full answer with explanation​

Answer 1

Answer:

which class bro or sis?????