A car initially traveling

eastward turns north by

traveling in a circular

path at uniform speed

as shown in Figure

The length of the arc

ABC is $235m,$ and the

car completes the turn

in $36\mathrm{.}0s.($a$)$ What is the

acceleration when the

car is at $B$ located at an

angle of $35\mathrm{.}0?$ Express

your answer in terms of the unit vectors hat$(i)$ and hat$(j).$ Deter$-$

mine $($b$)$ the car's average speed and $($c$)$ its average

acceleration during the $36\mathrm{.}0-$s interval.