A projectile is thrown at an angle $\theta$ such that it is just able to cross a vertical wall at its highest point as shown in the figure.The angle $\theta$ at which the projectile is thrown is given by
$\tan ^{-1}\left(\frac{1}{\sqrt{3}}\right)$
$\tan ^{-1}(\sqrt{3})$
$\tan ^{-1}\left(\frac{2}{\sqrt{3}}\right)$
$\tan ^{-1}\left(\frac{\sqrt{3}}{2}\right)$
The range of a projectile when launched at angle $\theta$ is same as when launched at angle $2 \theta$. What is the value of $\theta$ ?
A ball thrown by one player reaches the other in $2\, sec$. The maximum height attained by the ball above the point of projection will be about .......... $m$
A stone is just released from the window of a train moving along a horizontal straight track. The stone will hit the ground following
A projectile crosses two walls of equal height $H$ symmetrically as shown The maximum height of the projectile is ........ $m$
Two projectiles of same mass and with same velocity are thrown at an angle $60^o$ and $30^o$ with the horizontal, then which quantity will remain same