Daring swimmer leaps of Cliff - YF - Chapter 3 Problem 9

From the wonderful book Young and Freedman university physics Chapter 3 - Motion in Two or Three Dimensions - Projectile Motion A daring 510-N swimmer dives off a cliff with a running horizontal leap. What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75m wide and 9.00m below the top of the cliff?