
292 Forensic Engineering Fundamentals
is equation yields two real solutions and never a complex conjugate pair. e reason that
the equation never yields a complex conjugate pair is that for real and positive values A, B,
and L, the radicand is always greater than zero. It is obvious that the equation is not valid
for L equal to zero, a nonphysical case. e physically acceptable solution is the smaller of
the two real solutions because we are looking for the smaller radius that corresponds to
a minimum speed from yaw marks. e arc with the corresponding smaller value of R is
tangent to the x-axis within the distance L, while the larger value ...