Question 1207807
t hours
d distance between them
separating at right angle from each other


Car going east, distance  {{{30t}}}

Car going south, distance {{{40t}}}


{{{d^2=(30t)^2+(40t)^2}}}


{{{d=sqrt(900t^2+1600t^2)}}}


{{{d=t*sqrt(2500)}}}


{{{highlight(d=50t)}}}