Question

3.
A body covers first one-third of the distance with a
velocity 10 ms- in same direction, the second
one-third with a velocity 20 ms- and last one-third
with a velocity of 30 ms. The average velocity of
body is
(1) 17.8 ms-
(2) 16.4 ms -1
(3) 18.3 ms-1
(4) 20.2 ms-1​

Answer 1

Answer:

16.4ms here is your answer hope it helps u

Answer 2

given v1=10m/s ,v2=20m/s,v3=30m/s

as in 3 cases distance covered by the body is same

therefore

Vavg=3v1v2v3/v1v2+v2v3+v3v1

=3×10×20×30/10×20+20×30+30×10

=16.4m/s