* Gravity is a force of attraction between objects with mass. The amount of gravity an object experiences depends on its mass and the mass of the object it's being attracted to.
* Motion doesn't affect gravity. Whether an object is stationary or moving, the force of gravity acting on it remains the same.
* Acceleration can create a sense of weightlessness. However, this is due to the acceleration itself, not a change in gravity.
Example:
Imagine you're in an elevator. When the elevator accelerates upwards, you feel heavier. This is because the elevator is applying an additional force on you, which adds to the force of gravity. But the actual force of gravity acting on you hasn't changed.
In summary:
* Gravity inside a moving object is the same as gravity outside.
* The sensation of weightlessness or increased weight can be caused by acceleration, not a change in gravity.