Post Lab 5 Sara Irshad 1. For run 1 (an elastic collision), e=0.9017. For run 3 (an inelastic collision), e=0.4859. (0.1568/0.3227) In a perfectly elastic collision, the coefficient of restitution should be 1. Because the experiment is not perfect, for reasons such as friction and measurement error, the experimental value was slightly lower. In an inelastic collision, the coefficient of restitution should be lower than one, as demonstrated by the experimental data. 2. In run 1, the KE went from 0.855 to 0.0692 for a change of -0.0163. In run 2, the KE went from 0.3213 to 0.2507 for a change of -0.0706. In run 3, the KE went from 0.0534 to 0.0252 for a change of -0.0282. In run 4, the KE went from 0.1228 to 0.0924 for a change of -0.0304. In run 5, the KE went from 0.2615 to 0.0809 for a change of -0.1806. 3. For elastic collisions, the kinetic energy should be conserved. Therefore there should be no change in KE for runs 1 and 2. For inelastic collisions, though, the kinetic energy is not conserved. Therefore, a change would
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