$A$ bomb is released from an aircraft. Its trajectory is:

$A$ stone is dropped from the edge of a roof. It passes a window $2 \, m$ high in $0.1 \, s$. How far is the roof above the top of the window?

Which is greater: the attraction of earth for $1 \,kg$ of lead or attraction of $1 \,kg$ of lead for earth?

If your weight on the Earth is $450 N$,calculate your weight on planet Mars. (Radius of Mars $= 4.3 \times 10^{6} m$,mass of Mars $= 6 \times 10^{23} kg$ and gravitational constant $G = 6.67 \times 10^{-11} Nm^{2} kg^{-2}$). Take acceleration due to gravity on Earth as $10 m s^{-2}$.

In the relation $F = G \frac{Mm}{d^2}$,the quantity $G$:

$A$ girl stands on a box having $60 \,cm$ length,$40 \,cm$ breadth,and $20 \,cm$ width in three ways. In which of the following cases will the pressure exerted by the box be maximum?