* Free Fall and Gravity: Free fall means an object is moving under the sole influence of gravity. Gravity exerts a constant downward force, causing an object to accelerate.
* Acceleration: Acceleration is the rate of change of velocity. Since gravity constantly accelerates an object in free fall, its velocity is continuously changing.
To summarize:
* Constant velocity means the object is moving at the same speed in the same direction.
* Free fall means the object is accelerating due to gravity.
* Acceleration means the velocity is changing.
Therefore, an object in free fall cannot have a constant velocity.
Important Note: Sometimes, we use the term "terminal velocity" when discussing free fall. Terminal velocity is the constant speed that a freely falling object eventually reaches when the force of air resistance equals the force of gravity. However, it's crucial to remember that this is a *constant speed*, not a *constant velocity*, as the direction of motion remains downward.
