\documentclass[12pt]{article}
\usepackage{amssymb,amsmath,graphicx,hyperref}

\hypersetup{ pdfnewwindow=true, pdffitwindow=false }

\pagestyle{empty}
\begin{document}

 When a model rocket is launched, the propellant burns for a
 few seconds, accelerating the rocket upward. After burnout, the
 rocket coasts upward for awhile and then begins to fall. A small
 explosive charge pops out a parachute shortly after the rocket starts
 down. The parachute slows the rocket to keep it from breaking when it
 lands.
 The figure below shows velocity data from the flight
 of a model rocket. Use the data to answer the questions below.
 \begin{enumerate}
 \item How fast was the rocket climbing when the engine stopped?
 \item For how many seconds did the engine burn?
 \item When did the rocket reach its highest point? What was
 its velocity there?
 \item When did the parachute pop out? How fast was the
 rocket falling then?
 \item How long did the rocket fall before the parachute opened?
 \item Very carefully sketch a graph of the height of the
 rocket (in feet) versus time (in seconds).
 \begin{center}
 \includegraphics[width=2.3in]{../rocket.pdf}
 \end{center}
 \end{enumerate}
 
\end{document}