$(4-4)$ A projectile is fired from the origin $($at $y=0m)$ as shown in the $12$ pts figure. The initial velocity components are $v_{0x}=350\frac{m}{s}$ and $v_{0y}=65\frac{m}{s}.$ The projectile reaches maximum height at point $P,$ then it falls and strikes the ground at point $Q.$

a$.[2$pts$]$ What is the $y-$component of acceleration $(a_y)$ at point P $?$ What is the x $-$component of acceleration $(a_x)$ at point P $?$