A stone is thrown at an angle $\theta $ to the horizontal reaches a maximum height $H$. Then the time of flight of stone will be
$\sqrt {\frac{{2H}}{g}} $
$2\,\sqrt {\frac{{2H}}{g}} $
$\frac{{2\sqrt {2H\,\sin \theta } }}{g}$
$\frac{{\sqrt {2H\,\sin \theta } }}{g}$
A ball is thrown upwards and it returns to ground describing a parabolic path. Which of the following remains constant
If we can throw a ball upto a maximum height $H$, the maximum horizontal distance to which we can throw it is
At the top of the trajectory of a projectile, the acceleration is
A particle is projected with an angle of projection $\theta$ to the horizontal line passing through the points $( P , Q )$ and $( Q , P )$ referred to horizontal and vertical axes (can be treated as $x$-axis and $y$-axis respectively).
The angle of projection can be given by
A particle of mass $m$ is projected with velocity $v$ making an angle of ${45^o}$with the horizontal. The magnitude of the angular momentum of the particle about the point of projection when the particle is at its maximum height is (where $g = $ acceleration due to gravity)