Лаг1989 задача №1.39

The projectile flies out of the gun at an angle α = 45 ° to the horizontal with an initial velocity Vo = 500 m / s. A τ = 20 s after the start of the movement, ignoring air resistance, find; a) module of the projectile velocity; b) The angle between the speed vector v with the x-axis; c) units of the normal and tangential accelerations of the projectile; g) the radius of curvature of the trajectory at a point corresponding to that point in time.

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