A test projectile is fired horizontally into a viscous liquid with a velocity ofv0 = 17.0 m/s. The retarding force is proportional to the square of the velocity, so that the acceleration becomesa = -kv2 wherek = 0.047 m-1. Find the distanceD traveled in the liquid and the corresponding timet required to reduce the velocity to 7.8 m/s. Neglect any vertical motion