3. A marble rolls off a table with a velocity of 1.93 m/s [horizontally]. The tabletop is 76.5 cm above the floor. If air resistance is negligible, determine (a) how long the marble is airborne (b) the horizontal range (c) the velocity at impact 4. A stone is thrown horizontally with an initial speed of 8.0 m/s from a cliff. Air resistance is negligible. (a) Determine the horizontal and vertical components of displacement and instantaneous velocity at t = 0.0 s, 1.0 s, 2.0 s, and 3.0 s. (b) Draw a scale diagram showing the path of the stone. (c) Draw the instantaneous velocity vector at each point on your diagram