What do you mean by free fall?

Explanation

### Step-by-Step Solution:

1. **Definition of Free Fall**: Free fall refers to the motion of an object where the only force acting upon it is gravity. This means that the object is falling solely under the influence of gravitational pull, without any other forces acting on it.

2. **Conditions for Free Fall**: For an object to be in free fall, it must be in a vacuum or an environment where air resistance is negligible. This ensures that gravity is the only force acting on the object.

3. **Example of Free Fall**: A classic example of free fall is when an object is dropped from a height. As it falls, the only force acting on it is the gravitational force pulling it towards the Earth.

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