Question

-3.
A body starts from rest and travels a distance
S with uniform acceleration, then moves
uniformly a distance 2S and finally comes to
rest after moving further 5S under uniform
retardation. The ratio of the average velocity
to maximum velocity is

Answer 1

S = 1/2at^2

Average Velocity =( S + 2S + 5S) ÷( t1 + t2 + t3)

Avg Velocity = 8s/t = 4at^2

Maximum Velocity = v = 0 + at

ratio = 4 :1