The maximum horizontal range of projectile is 400 m . The maximum height attained it will be

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100 m

200 m

400 m

800 m

answer is A.

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Detailed Solution

Horizontal range is maximum, whenθ=450 Horizontal range, R=u2 sin 2θ/g ∴ 400=u2sin2×450g or u2g=400 …(i)Maximum height,H=u2sin24502g=4002×12=100 m .

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