Dynamic carts and crashing blocks for Newton's laws of motion///Homemade Science with Bruce Yeany

Three variations of a classic demonstration graphically show how Newton's 2nd and 3rd law are applied giving students a better understanding of the concepts.
Homemade science is a collection of classroom tested ideas, suggestions, projects, and experiments that I have used in teaching physical science for the Annville-Cleona school district in central Pennsylvania. I am currently in my 38th year of teaching. My intention is to share these ideas with other teachers or anyone who has an interest in science. I have found that designing and building my own equipment has taught me more than any course that I have ever taken. I hope that you consider trying this for yourself.. I also share and show some of these ideas at workshops, science conferences, or inservice presentations.
Videos are shot with a Casio EXH20. Slow motion shots are either 3.5 or 7 times slower.