(Solved): Car A travels on a circular path while Car B travels in a straight line. At the instant shown, the ...

Car A travels on a circular path while Car B travels in a straight line. At the instant shown, the speed of car $\mathrm{A}$ is increasing at $10\mathrm{ft}/{\mathrm{s}}^2$ and the speed of car $\mathrm{B}$ is decreasing at $5\mathrm{ft}/{\mathrm{s}}^2$. For the position/instant shown, determine (a) the velocity of $B$ relative to $A$ and (b) the acceleration of $\mathrm{B}$ relative to $\mathrm{A}$. (1 mile $=5280\mathrm{ft}$.