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Figure 4 | SpringerPlus

Figure 4

From: Aerodynamic drag of modern soccer balls

Figure 4

Drag coefficient ( C d ) of the Roteiro, Teamgeist II, Jabulani, and Tango 12. The critical Reynolds number of the respective balls was ~2.2 × 105 (C d  ≈ 0.12), ~2.8 × 105 (C d  ≈ 0.13), ~3.3 × 105 (C d  ≈ 0.11), and ~2.4 × 105 (C d  ≈ 0.15).

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