The following is a simulation for a real physics demonstration.
A ball is placed in the funnel and the funnel cocked by compressing a spring. The track is raised at one end so that when it is released the cart accelerates down the track. At a certain point a bump below the track trips a lever, releasing the spring and ejecting the ball perpendicular to the track.
Where will the ball fall?
* (a) The ball will fall in front of the funnel.
* (b) The ball will fall behind the funnel.
* (c) The ball will fall IN the funnel.