function v = v_msd2rad(msec, d);
%   V_MSD2RAD meters per second, diameter
%   V_MSD2RAD(MSEC, D) converts a velocity of
%   MSEC measured in meters per second for a
%   wheel of diameter D measured in meters to
%   a velocity in radians per second.

error(nargchk(2, 2, nargin));

v = msec * 2 / d;