1)....... Why do two students sitting close to each other not feel the force of gravitational attraction between them?
(ans) Because the force between the two of them is too weak for them to get affected by them...
2) ...... Distance between two bodies is increased by a factor of four. How much will be the change in the force of gravitation?
(ans) It will increase by 16times
3)....... Why is G known as a universal gravitational constant?
(ans) The value of G remains constant everywhere in the observable universe.
4).......What do you mean by acceleration due to gravity?
(ans) It is simply the constant rate of speed increase that objects experience when falling freely under the influence of gravity.
5)......Why do a heavier and a lighter object when dropped from the same height fall at the same rate?
(ans) Though heavier objects exert a stronger gravitational pull, they also experience a proportionally stronger pull from Earth, resulting in the same acceleration and fall rate for both objects in a vacuum.
6)......State SI unit of acceleration due to gravity.
(ans) Meter per second squared...
7).....Write equations of motion of an object moving under gravity.
(ans) v = u + gt