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. 2020 Apr 28;3:25. doi: 10.3389/frai.2020.00025

Figure 2.

Figure 2

The balls that were dropped from the bridge, with the volleyball omitted. From left to right: Golf Ball, Tennis Ball, Whiffle Ball 1, Whiffle Ball 2, Baseball, Yellow Whiffle Ball, Orange Whiffle Ball, Green Basketball, and Blue Basketball. The two colored whiffle balls have circular openings and are structurally identical. The two white whiffle balls have elongated slits and are also identical.