Binder #7. Projectile motion unit; Kinetic & potential energy; Collision, conservation of momentum, and accident reconstruction unit, 1996 - 2003, Box: 14, Folder: 8. David Lehman's Alternative Community School records, 6901. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/970597 Accessed September 27, 2026.