Question

A particle starts from origin, goes along x-axis to
a point (40 m, 0) and then returns along same
line to point (-40 m, 0). If particle takes 20 s for
this motion, then average speed of particle is
(1) 2 m/s
(2) 4 m/s
(3) 6 m/s
(4) Zero
Option 1
Option 2
Option 3
Option 4​

Answer 1

Answer:

average speed =total distance /time

total distance is 120 m.(40+40+40)

avg speed =120/20=6m/s