A 4kg block slides up a rough incline that makes an angle of 30∘ with the horizontal. Its initial speed at the bottom is 6ms−1, and the coefficient of kinetic friction between the block and the plane is 0.30. How far (along the incline) will the block move before coming to rest?
a) 3.6m
b) 2.0m
c) 2.4m
d) 4.8m