Estimate the speed at which the drag on a 150-g steel ball becomes equal to about 1% of its weight. (The density of steel is about 7900 kg/m3, and C for a sphere is about equal to 0.5.) Take the density of air to be 1.2 kg/m3. The speed is ______m/s.
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. Estimate the speed at which the drag on a 150-g steel ball becomes equal to about 1% of its weight. (The density of steel is about 7900 kg/m3, and C for a sphere is about equal to 0.5.) Take the density of air to be 1.2 kg/m3.
The speed is ______m/s.
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