A child pulls a 10kg sled across level snow by applying a 60N force at an angle of 30∘ above the horizontal. The coefficient of kinetic friction between the sled and the snow is μk=0.20. What is the magnitude of the sled’s acceleration?
a) 5.2m/s2
b) 4.0m/s2
c) 3.8m/s2
d) 2.6m/s2