A 19.9 kg block is placed at the top of a frictionless inclined plane angled at 13.9 degrees relative to the horizontal. When released (from rest), the block slides down the full 3.05 meter length of the incline. Calculate the acceleration of the block as it slides down the incline. [Start by drawing a free-body diagram for the block.] Note that all the information provided may not be necessary to solve the problem.