Question

Two particles start moving from the same
point along the same straight line. The first
moves with constant velocity v and the second
with constant acceleration a. During the time
that elapses before the second catches the
first, the greatest distance between the
particles is:​

Answer 1

Answer:

A distance between the two particles is maximum when both have the same velocity 

let the second move has a velocity v at time t 

   v=at

   t=av

distance cover by the first paticle s1 is 

=  s1=vt=v×av=av2

distance cover the particle s2

      =21×at2=2av2

distance between both the particle is 

      s1−s2

    =av2−2av2=2av2