What is the nature of motion of an object falling freely under the action of gravity?

Write the expression for the acceleration due to gravity at the surface of the earth.

What is the name given to the path followed by a projectile?

According to Newton's law of gravitation,every particle of matter attracts every other particle. But bodies on the surface of the Earth never move towards each other on account of this force of attraction. Why?

Which of the following is the evidence to show that there must be a force acting on the earth and directed towards the sun?

State the universal law of gravitation. Write the $SI$ unit of $G$. The gravitational force between two objects is $100 \, N$. How should the distance between the objects be changed so that the force between them becomes $50 \, N$?