SECTION 3.3 Projectile Motion 3.9 . A physics book slides off a horizontal tabletop with a speed of 1.40 m/s. It strikes the floor in 0.320 s. Ignore air resistance. Find (a) the height of the tabletop above the floor; (b) the horizontal distance from the edge of the table to the point where the book strikes the floor; (c) the horizontal and vertical components of the book's velocity, and the magnitude and direction of its velocity, just before the book reaches the floor. (d) Draw x-t, y-t, Ux-t, and vy-t graphs for the motion. 3.10 .. A daring 510 N swimmer dives off a cliff with a running hori- zontal leap, as shown in Fig. E3.10. 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 1.75 m wide and 9.00 m below the top of the cliff