73. Mortar set at an angle α = 60 ° to the horizon

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73. Mortar set at an angle α = 60 ° to the horizontal roof of the building whose height h = 40 m. Initial velocity υ0 mines is 50 m / s. Required: 1) write the kinematic equations of motion and the equation of the trajectory and draw the path to scale; 2) to determine the time of flight τ mines, the maximum height H of its recovery, a horizontal distance s flight speed υ at the time of the fall of the mines on the ground. Air resistance neglected.
Note. The origin is placed on the surface of the earth so that it was on the same vertical line with a mortar and that the velocity vector υ lying in the plane of xOy.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)


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