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5. J. A. White, F.L. Román, A. Medina, and S. Velasco, “A measurement of g listening to falling balls,” Phys. Teach. 45(3), 175 (2007).
6. L. Hmurcik, A. Slacik, H. Miller, and S. Samoncik, “Linear regression analysis in a first physics lab,” Am. J. Phys. 57(2), 135 (1989).
7. R. Dwayne, “An Inexpensive Computer-Controlled Photogate,” Phys. Teach. 43(3), 169 (2005)
