work can be calculated using the formula:
w = 0.5m ( vf^2 - vi^2)
where m is the mass of the object
vf is the final velocity of the object
vi is the initial velocity of the object
w = 0.5 ( 60 ) [ (4^2) - ( 8^2 ) ]
w = -1440 J was the work done by the object
