A tractor has mass 750.0 kg, while cart A has mass 350.0 kg and cart B has mass 150.0 kg. The driving force acting for a brief period of time accelerates the system from rest and acts for 1 minute. (a) If this driving force is given by F = 1000t N, find the speed after 5.00 seconds. (b) What is the horizontal force acting on the connecting cable between the tractor and cart A at this instant?

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