A projectile is projected with speed $u$ of an angle of $60^o$ with horizontal from the foot of an inclined plane. If the projectile hits the inclined plane horizontally, the range on inclined plane will be :-
A projectile is projected with speed $u$ of an angle of $60^o$ with horizontal from the foot of an inclined plane. If the projectile hits the inclined plane horizontally, the range on inclined plane will be :-
- A
$\frac{u^2 \sqrt{21}}{2g}$
- B
$\frac{3u^2}{4g}$
- C
$\frac{u^2}{8g}$
- D
$\frac{\sqrt {21}}{8} \frac{u^2}{g}$
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