To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road $($the rolling resistance$).$ Assume all values are accurate to three significant digits. $($Assume the density of air is $1\mathrm{.}21k\frac{g}{m^3}.)$

$($a$)$ What is the magnitude of drag force $($in N$)$ at $76k\frac{m}{h}$ and $122k\frac{m}{h}$ for a Toyota Camry? $($Drag area is $0\mathrm{.}70m^2,$ and drag coefficient is $0\mathrm{.}28.)$

$\backslash$table$[[76k\frac{m}{h},($No Response$),$N$],[122k\frac{m}{h},($No Response$),$N$]]$

$($b$)$ What is the magnitude of drag force $($in N$)$ at $76k\frac{m}{h}$ and $122k\frac{m}{h}$ for a Hummer H $2?($Drag area is $2\mathrm{.}44m^2,$ and drag coefficient is $0\mathrm{.}64.)$

$\backslash$table$[[76k\frac{m}{h},($No Response$),$N$],[122k\frac{m}{h},($No Response$),],[,$N$,]]$