! G. Cowan, Exercises in Statistical Data Analysis ! ! Data on Galileo's experiment rolling a ball down an inclined plane. ! ! The ball descends a height h down an inclined ramp. A shelf at the end of ! the ramp then causes the trajectory to become horizontal without changing ! the ball's speed (essentially the configuration of a ski jump). The edge ! of the shelf is a fixed distance above the floor, and the horizontal ! distance d from the edge to the point of impact is measured for five ! different values of the height h. The units are punti (points). ! ! Starting height Horizontal distance from edge ! above shelf of shelf to point of landing ! ! h d ! 1000 1500 828 1340 800 1328 600 1172 300 800 ! ! References: ! Drake, S. and Maclachlan, J., Galileo's discovery of the parabolic ! trajectory, Scientific American, 232 (March 1975) 102; ! Drake, S., "Galileo at Work", University of Chicago Press, Chicago (1978).