(Solved): 24. A 2.0kg disk is able to move on a straight, level track with negligible friction. With the d ...

24. A $$2.0\mathrm{kg}$$ disk is able to move on a straight, level track with negligible friction. With the disk initially at rest, a horizontal force is applied to the disk. The force is measured as a function of the disk's displacement, and the data are shown in the graph. When the disk's displacement is $$2.0\mathrm{m}$$, the speed of the disk is most nearly (A) $$2.8\mathrm{m}/\mathrm{s}$$ (B) $$4.0\mathrm{m}/\mathrm{s}$$ (C) $$5.6\mathrm{m}/\mathrm{s}$$ (D) $$8.0\mathrm{m}/\mathrm{s}$$