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 $\theta $ ?
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 $\theta $ ?
- A
$\frac{g}{{\cos \,\theta }}\,\sqrt {\frac{d}{{2\left( {d\,\tan \,\theta \, - \,h} \right)}}} $
- B
$\frac{d}{{\cos \,\theta }}\,\sqrt {\frac{g}{{2\left( {d\,\tan \,\theta \, - \,h} \right)}}} $
- C
$\,\sqrt {\frac{{g{d^2}}}{{h\,{{\cos }^2}\,\theta }}} $
- D
$\,\sqrt {\frac{{g{d^2}}}{{\left( {d\ -\ h} \right)}}} $
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