What do you mean by the term ‘free fall’?

Fill in the following blanks with suitable words:

(a) The acceleration due to gravity on the moon is about ……..of that one the earth.

(b) In order that the force of gravitational between two bodies may become noticeable and cause motion, one of the bodies must have an extremely large ………..

(c) The weight of an object on the earth is about …………..of its weight on the moon.

(d) The weight of an object on the moon is about ………….of its weight on the earth.

(e) The value of g on the earth is about ………of that on the moon.

(f) If the weight of a body is 6 N on the moon, it will be about …………… on the earth.

Explain what is meant by the equation:

g = G ×

Where the symbols have their usual meanings?

During a free fall, will heavier objects accelerate more than lighter ones?

Can we apply Newton’s third law to the gravitational force? Explain your answer.