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The angle which the velocity vector of a projectile thrown with a velocity u at an angle to the horizontal will make with the horizontal after time t of its being thrown up is
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Correct option is D
According to figure v'cos α = v cos θ and v' sin α = v sin θ-gt∴ v' sinαv' cos α = v sin θ - gtv cos θor tan α = v sinθ - gtv cos θ∴ θ = tan-1(v sin θ - gtv cos θ)Talk to our academic expert!
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A ball is projected obliquely with a velocity 49 ms–1 strikes the ground at a distance of 245 m from the point of projection. It remained in air for
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