A physics book slides off a horizontal table top with a speed of 1.30m/s . It strikes the floor after a time of 0.320s. Ignore air resistance.
1. Discover the magnitude of the book's velocity just before the book reaches the floor= v=3.39 m/s. I found this but I couldn't do part b:
2. Discover the direction of the book's velocity just before the book reaches the floor.Express your answer as an angle measured below the horizontal