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 sound catches the first, the greatest distance between the particle is.

Two bodies start moving in the same straight line at the same instant of time from the same origin. The first body moves with a constant velocity of 40 m/s, and the second starts from rest with a constant acceleration of 4 "m/s"^2 . Find the time that elapses before the second catches the first body. Find also the greatest distance between then prior to it and the time at which this occurs.

Two bodies start moving in the same straight line at the same instant of time from the same origin. The first body moves with a constant velocity of 40ms^-1 , and the second starts from rest with a constant acceleration of 4ms^-2 .Find the time that elapses before the second catches the first body. Find the also the greatest distance between them prior to it and time at which this occurs.