Questions
If a stone is to hit at a point which is at a distance d away and at a height h above the point from where the stone starts, then what is the value of initial speed u if the stone is launched at an angle ?
detailed solution
Correct option is B
h = (u sin θ)t-12gt2d = (u cos θ)tor t = du cos θh = u sin θ.du cos θ-12gd2u2cos2 θu = dcos θg2(d tan θ-h)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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