A 2 kg mass is released from rest at the top of a plane inclined at20 degrees above the horizontal. The coefficient of kineticfriction between the mass and the plane is 0.20. What will be the speed of the mass after sliding 4 m along the plane?
A) 5.2 m/s
B) 2.2 m/s
C) 3.5 m/s
D) 3.0 m/s