This reminds me of some classical mechanics problems I encountered in college. Add a spring (like with Hooke's law) on a merry-go-round that is 10 meters from the center. Find the net force on the object after 5 seconds. Oh yeah, the merry-go-round has been pushed off a cliff and don't ignore wind resistance. All kidding aside, I always would start with a free-body diagram to try to my head around the problem. There must be some acceleration in the problem being that it is not going at a constant speed. At t=0, the velocity is zero. At t= whatever, it is at max velocity.