The external force, F = 4s - s² lb is applied to the 3-pound crate, where s is the distance measured along the path of motion in feet. At s = 0 feet, the velocity of the crate is 2f(t) /s. Determine the...
A) 8 ft/s
B) 12 ft/s
C) 16 ft/s
D) 20 ft/s