Determining Constant Velocity of a Block Sliding Down an Inclined Plane

A block slides down an inclined plane in a classroom. Which of the following pieces of information are needed to determine whether the velocity of the block will be constant? Select two answers. A. The mass of the block B. The angle of the inclined plane C. The acceleration due to gravity in the class room D. The coefficient of kinetic friction between the block and the inclined plane

B. The angle of the inclined plane D. The coefficient of kinetic friction between the block and the inclined plane