Question

A car travels from rest with a constant acceleration a for t seconds. What is the average speed of the car for its journey, if the car moves along a straight road?​

Answer 1

Answer:

Initial speed of car  u=0

Distance covered by car in t seconds is given by

second equation of motion,    

S=ut+ 1/2*at^2

⟹ S= 1/2*at^2  

       (∵u=0)

Average speed of car =  total time/ total distance

Avg. Velociy= s/t = 1/2at^2

                                -------------

                                     t

= at/2

Hope it helps u