An object, which is initially at rest on a frictionless horizontal surface, is acted upon by four constant forces. F1 is 11.1 N acting due East, F2 is 28.6 N acting due North, F3 is 43.5 N acting due West, and F4 is 20.7 N acting due South. How much total work is done on the object in 4.44 seconds, if it has a mass of 16.0 kg? How fast does the object end up moving at the end of the 4.44 seconds?