An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero 230 N. (a) What is the equivalent spring constant of the bow? (b) How much work does the archer do in drawing the bow? (c) If the arrow, which has a mass of 0.05 kg, left the bow with a speed of 50.0 m/s, what is its kinetic energy?