A falling object reaches this steady speed when drag balances its weight.

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Your new ahaTerminal Velocity

Terminal velocity is reached when drag and buoyancy balance weight during a fall. Source: Terminal velocity ↗

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13Light changes direction as it changes speed between materials, making a straw look bent in water.RECALL
Refraction
Refraction bends light as it changes speed moving between materials, making a straw look bent in water.
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14A mirror returns light at an angle equal to its angle of incidence through this process.RECALL
Reflection
Reflection returns light at the same angle it strikes a surface, which is how mirrors show a clear image.
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15Waves spread around obstacles and through gaps in this process, especially when the gap is comparable to their wavelength.RECALL
Diffraction
Diffraction spreads waves around obstacles or through narrow gaps, most visibly when the gap nears the wave's own length.
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