An object starts from rest at the origin and moves along the x axis with a constant acceleration of 4m/s2 - Science - Motion

Question

An object starts from rest at the origin and moves along the x axis
with a constant acceleration
of 4m/s2 Its average velocity as it goes from x = 2m to x = 8m
is:
A 1m/s
B 2m/s
C 3m/s
D 5m/s
E 6m/s
ans: E

Devendra · Accepted Answer

s=ut+at^2/2 as u=o given s=at^2/2 2=4t^2/2 by calculations t=1
again 8=4t^2/2 by calculations t=2 sec average speed=distance
travel/time taken averae=8~2/2~1=6/1=6 m/s

An object starts from rest at the origin and moves along the x axis with a constant accelerationof 4m/s2. Its average velocity as it goes from x = 2m to x = 8m is:A. 1m/sB. 2m/sC. 3m/sD. 5m/sE. 6m/sans: E

An object starts from rest at the origin and moves along the x axis with a constant acceleration
of 4m/s2. Its average velocity as it goes from x = 2m to x = 8m is:
A. 1m/s
B. 2m/s
C. 3m/s
D. 5m/s
E. 6m/s
ans: E