function [yMax,xMax,tof] = projectileKin(vo,theta)
%[yMax,xMax,tof] = projectileKin(vo,theta);
% function to calculate range, height and time-of-flight for a simple
% projectile 
%(PHYS 220 HW #1, problem 2, Spring 2009)
%
%    vo --> initial speed (muzzle velocity, m/s)
% theta --> initial angle (degrees)
%  yMax <== max. height (m)
%  xMax <== range (m)
%   tof <== time-of-flight (s)

% this constant is hardwired
g = -9.81;

yMax = -(vo*sind(theta))^2 / (2*g);
xMax = -vo^2 * sind(2*theta) / g;
tof = -2*vo*sind(theta) / g;

return