Right, if we set up right triangle for the ramp, 'g' would be the short side. You need to use the angle at which the ramp is elevated and use sin(theta) = g/h to find 'h' as a vector of the ramp.
Okay, so firstly you need to calculate the velocity at which the ball is moving down the ramp.
Use v2 = u2 + 2as
Since we're talking about a falling object, 'a' turns to 'g'
After you find the velocity, you want to find the time it's going to travel from the edge of the table to the floor...