The block of weight W has an initial velocity { v }_{ 1 } in the direction shown. If a force F = { { f }_{ 1 } i + { f }_{ 2 } j} acts on the block for time t, determine the final speed of the block. Neglect friction. Given: W = 2 lb , a = 2 ft , { f }_{ 1 } = 0.5 lb , { v }_{ 1 } = 10 ft/s , b = 2 ft , { f }_{ 2 } = 0.2 lb , g = { 32.2ft/s }^{ 2 } , c = 5 ft , t = 5 s