MULTI$-$PART PROBLEM $-$ ASSIGN ALL PARTS

NOTE: This is a multi$-$part question. Once an answer is submitted, you will be unable to return to this part. A $56\mathrm{.}5-kg$ pilot flies a jet trainer in a half vertical loop of $1200-$m radius so that the speed of the trainer decreases at a constant rate. Know that the plane has a speed of $550k\frac{m}{h}$ at point $A,$ and the pilot experiences weightlessness at point $C($i$.$e$.,$ the normal force from the seat bottom is zero$).$

Problem $12\mathrm{.}050.$b $-$ Particle kinetics, curvilinear motion, normal and tangential coordinates

Determine the deceleration of the plane.

$($You must provide an answer before moving on to the next part.$)$

The deceleration of the plane is $\frac{m}{s^2}.$