Chapter 6.3, Problem 6.2GI

Three forces have magnitudes in newtons that are numerically equal to these quantities: (a)x, (b) x², and (c) $\sqrt{x}$, Where x is the position in meters. Each force acts on an object as it moves from x = 0 to x = 1 m. Notice that all three forces have the same values at the two endpoints—namely, 0 N and 1 N. Which of the forces (a), (b), or (c) does the most work? Which does the least?