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The drag force on falling box is described by FD=(1/2)ρACDv2, where ρ is the density of...

The drag force on falling box is described by FD=(1/2)ρACDv2, where ρ is the density of air, 1.2 kg/m3. The mass of the box is 12.0 g, and the effective area of the bottom of the box is 109 cm2. Assume a drag coefficient of 1.10

a) Determine the drag force on the box when it is falling at a speed of 1.21 m/s.

b) The box will reach terminal speed when the drag force on it is equal to its weight: (1/2)ρACDv2=mg. Estimate the terminal speed of the box.

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