Problem $13\mathrm{.}116$ In the preliminary design of a sun$-$

powered car, a group of engineering students estimates that

the car's acceleration will be $0\mathrm{.}6\frac{m}{s^2}.$ Suppose that the

car starts from rest at $A,$ and the tangential component of its

acceleration is $a_t=0\mathrm{.}6\frac{m}{s^2}.$ What are the car's velocity

and acceleration in terms of normal and tangential compo$-$

nents when it reaches $B?$