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Fig. 1. (Color online) The perfectly elastic collision between two balls. The velocities of the two balls perpendicular to the collision plane are exchanged. In this illustration, the collision plane is represented by the vertical line. After the collision, the two balls move perpendicular to each other.
New Phys.: Sae Mulli 2024;74:621~633 https://doi.org/10.3938/NPSM.74.621
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