$A$ person can jump higher on the surface of the Moon than on the Earth. Why?

What will happen if the force of gravity disappears suddenly?

Why does a body weigh more at the poles than at the equator?

The gravitational force between two objects is $F$. How will this force change when:
$(i)$ the distance between them is reduced to half?
$(ii)$ the mass of one of the objects becomes four times?

$(i)$ We observe weightlessness in a satellite although a satellite moves under Earth's gravity. Explain.
$(ii)$ $A$ ball is thrown up with a velocity of $15 \, m s^{-1}$. What is the maximum height attained by it? $(g = 9.8 \, m s^{-2})$

Identical packets are dropped from two aeroplanes,one above the equator and the other above the north pole,both at height $h$. Assuming all conditions are identical,will those packets take the same time to reach the surface of the Earth? Justify your answer.