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Q: Why does a stone thrown towards the sky return to the earth?
  • A. The downward pressure pulls it towards the earth.
  • B. The centripetal force, which pulls it towards the earth.
  • C. The work done by the object pulls it towards the earth.
  • D. There is a gravitational force which pulls it towards the ground.
Correct Answer: Option D - The force of attraction acting between any two bodies is called the force of gravitation. If one of these two bodies is earth, then this gravitational force is called gravity. Therefore, gravity is the attraction force with which the earth pulls a body towards its center. The stone thrown from the ground floor towards the sky goes back towards the earth. Because the gravitational force exerted on this stone by the earth pulls this stone towards the center of the earth.
D. The force of attraction acting between any two bodies is called the force of gravitation. If one of these two bodies is earth, then this gravitational force is called gravity. Therefore, gravity is the attraction force with which the earth pulls a body towards its center. The stone thrown from the ground floor towards the sky goes back towards the earth. Because the gravitational force exerted on this stone by the earth pulls this stone towards the center of the earth.

Explanations:

The force of attraction acting between any two bodies is called the force of gravitation. If one of these two bodies is earth, then this gravitational force is called gravity. Therefore, gravity is the attraction force with which the earth pulls a body towards its center. The stone thrown from the ground floor towards the sky goes back towards the earth. Because the gravitational force exerted on this stone by the earth pulls this stone towards the center of the earth.