I am trying to (a), (b), (c) enumeration but when I add [(a)]
next to \begin{enumerate}
as \begin{enumerate}[(a)]
, it is not making enumeration.
Could you please help me about solving this problem?
Thank you in advance.
\begin{enumerate}
\item Suppose $m$ = 6 kg, $k$ = 3 kg/sec. How high will the projectile go? When will it return to
earth, i.e., to $y$ = 0?
\item Suppose $m$ = 12 kg, $k$ = 3 kg/sec. How high will the projectile go? When will it return to
earth?
\item When $k$ = 0, i.e., there is no air resistance, the equation governing the motion yield $$
\bar{v} = -gt + v_0, \bar{y} = -\frac{ g t^2 }{ 2 } + v_0 t
$$
where the $\bar{v}$ and $\bar{y}$ are the values of the velocity and position when $k$ = 0.
Let $v_0$ = 25 m/sec. and $m$ = 6 kg. Now let successively $k$ = 1, 0.1, 0.001, 0.0001 and calculate
the return times and compare them with the return time
for $k$ = 0. The numerical evidence should suggest that as $k\rightarrow 0$, the return times converge to the value for $k$ = 0.
\end{enumerate}