Task 10753.
Javelin thrower threw a spear at 80 m. The angle of attack spears of 30 °. The air density of 1.3 kg / m ^ 3 spear diameter of 3 cm. Calculate the drag force of the movement of the spear.
Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
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