A block is released from rest on an inclined plane and moves 3 m during the next 4.1 s. The acceleration of gravity is 9.8 m/s². What is the magnitude of the acceleration of the block? Answer in units of m/s². What is the coefficient of kinetic friction (k) for the incline?

A) 9.8 m/s², 0.25
B) 9.8 m/s², 0.50
C) 4.1 m/s², 0.25
D) 4.1 m/s², 0.50