A coal car of mass m₁ = 3530 kg is rolling down the tracks at a velocity of vᵢ = 3.8 m/s when a loader drops a load of coal m₂ = 5797 kg into the car. What is the final velocity of the coal car?

a) 1.6 m/s
b) 2.4 m/s
c) 3.2 m/s
d) 4.0 m/s