The projectile was fired at an angle of 35 ° to the horizon with an initial velocity of 80m / s. 400 m from the firing point there is a wall. Determine the time it takes the projectile to hit the wall. When analyzing, ignore the influence of air resistance.
"v_x=80\\cdot\\cos35\u00b0=65.53\\ (m\/s)"
"t=400\/65.53=6.1\\ (s)" . Answer
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