A woman fires a rifle with a barrel length of 0.5800m. Let (0,0) be where the 125g bullet begins to move, and the bullet travels in the +x-direction. The force exerted by the expanding gas on the bullet is given by the equation F = -kx². Calculate the value of the spring constant k if the bullet is accelerated from rest to a speed of 850 m/s in a distance of 0.300 m.
