The first graph is the energy E of an electric car versus its terminal velocity v, the second graph shows terminal velocity v versus maximum horsepower hp. The points (v,E)=[math] and (hp,v)=[math] are shown on the graphs. Estimate
[math]
Include units.
Note that the gridlines on the horsepower axis are spaced every two horsepower (units = "hp"), the velocity axes are spaced every [math] (units = "ft/s"), and on the energy axis they are spaced every [math] foot pounds (units = "lbf").