\input epsf
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\noindent {\bf Problem statement} a) A car is traveling at 50 mi/h
when the brakes are fully applied, producing a constant deceleration
of 40 ft/s$^2$. What is the distance covered before the car comes to a
stop?

\medskip

\noindent b) A car braked with a constant deceleration of 40 ft/s$^2$
and produced skid marks measuring 160 feet before coming to a
stop. How fast was the car traveling when the brakes were first
applied?

\vfil\eject\end

