A Block Slides Down a Frictionless Inclined Plane

Multiple Choice

A block slides down a frictionless inclined plane. All of the following are correct except

A) the velocity of the block changes with time.
B) the acceleration of the block is less than the acceleration of gravity.
C) the normal force on the block is less than the weight of the block.
D) the frictional force on the block is less than the weight of the block.