Statement-I : The initial velocity for ground-to-ground projectile is ( ai + bj ) m / s . If range of projectile is maximum, then a = b . Statement-II: In ground to ground projectile motion, angle of

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Statement-I : The initial velocity for ground-to-ground projectile is ( ai + bj ) m / s . If range of projectile is maximum, then a = b . Statement-II: In ground to ground projectile motion, angle of projection is equal to 4 5 ∘ for maximum range condition.

TestHub · Accepted Answer

R = g u 2 s i n ( 2 θ ) ​ For maximum range: sin ( 2 θ ) = 1 ⇒ 2 θ = 9 0 ∘ θ = 4 5 ∘ u x ​ = u cos ( 4 5 ∘ ) = 2 ​ u ​ . u y ​ = u sin ( 4 5 ∘ ) = 2 ​ u ​ . Thus, u x ​ = u y ​ . A ​ .

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