Ratio between maximum range and square of time of flight in projectile motion is
$\frac{g}{2}$
$\frac{g}{5}$
$\frac{g}{10}$
$\frac{g}{12}$
The greatest height to which a man can throw a stone is $h$. The greatest distance to which he can throw it, will be
Range of a bob of mass $1\, kg$ is $80\,m$ while it attains maximum height $20\,m$. Its change in momentum in complete motion ............ $N-s$
A projectile fired with initial velocity $u$ at some angle $\theta $ has a range $R$. If the initial velocity be doubled at the same angle of projection, then the range will be
A projectile is thrown with speed $40 \,ms ^{-1}$ at angle $\theta$ from horizontal. It is found that projectile is at same height at $1 \,s$ and $3 \,s$. What is the angle of projection?
A shell fired from the base of a mountain just clears it. If $\alpha$ is the angle of projection then the angular elevation of the summit $\beta$ is