State two factors on which the value of $g$ depends.

$A$ body projected horizontally moves with the same horizontal velocity although it is under the action of the force of gravity,why?

Show that the weight of an object on the moon is one-sixth of its weight on the earth. [Given: mass of earth $= 5.98 \times 10^{24} \ kg$,mass of moon $= 7.36 \times 10^{22} \ kg$,radius of earth $= 6.37 \times 10^{6} \ m$,radius of moon $= 1.74 \times 10^{6} \ m$]

State any two properties of gravitational force.

$A$ stone is dropped from the roof of a building. It takes $4 \, s$ to reach the ground. Find the height of the building. $(g = 9.8 \, m \, s^{-2})$

Show that if the earth attracts two bodies $A$ and $B$ placed at the same distance from the centre of the earth with the same force,then their masses are equal.