\magnification=\magstep2


$$
\vec{F}_{g} = - m g \thinspace \thinspace {\hat{k}}
$$

$$
\eqalign{
x(t) &= x_0 + V_0 \cos(\theta) t  \cr
y(t) &= y_0 + V_0 \sin(\theta) t  - {{1}\over{2}} g t^2 \cr
}
$$

$$
\eqalign{
y(t) &= y_0 - V_0 \cos(\theta) t  \cr
z(t) &= z_0 + V_0 \sin(\theta) t  - {{1}\over{2}} g t^2 \cr
}
$$


$$
\vec{F}_{d} = - {{1}\over{2}} C_D \rho A v^2 
               \thinspace \thinspace {{\vec{v}}\over{{|v|}}}
$$

$$
\vec{F}_{M} =  {{1}\over{2}} C_L \rho A v^2 
               \thinspace \thinspace \thinspace ({{\hat{\omega}}\times{\hat{v}}})
$$

$$
   {\hat{\omega}}  \qquad \qquad      {\hat{v}}
$$


$$
   S \thinspace = \thinspace {{v_r} \over {v_t}}  \thinspace
                = \thinspace { { R \omega } \over {v_t} }
$$



\vfill\eject
\bye
