A marble, which may be approximated as uniform, solid sphere, rolls without slipping down an incline that makes and angle of $29\mathrm{.}929\mathrm{.}9$ with the horizontal. It is released from rest. Part $($a$)$

What is the magnitude of the linear acceleration, in meters per second squared, of the marble?

Part $($b$)$

How far, in meters, does the marble roll in $2\mathrm{.}8$s$2\mathrm{.}8$s$?$