The best equipment for this demo is: A Pasco bearing track, a cart, a spring, a Pasco photogate. There is a 2-meter bearing track in Room 302, over the door to 302A. Bearing carts, springs, and 1.2 meter Pasco tracks can be obtained from the P115/P116 Labs (Room 404, cabinet to right of door).
If you are satisfied with having a weight fall vertically, springs, masses, and photogates can be obtained from Room 403A or Room 404.