* Velocity changes at a constant rate: This means that the speed of the object either increases or decreases by the same amount every second.
* The object's direction of motion remains unchanged: The object moves in a straight line.
* The object's acceleration vector is constant: The acceleration vector has a constant magnitude and direction.
Examples of constant acceleration in one direction:
* A ball falling freely near the Earth's surface: The ball accelerates downwards at a constant rate due to gravity.
* A car accelerating uniformly from rest: The car's speed increases at a steady rate, and it moves in a straight line.
* A rocket moving upwards with constant thrust: The rocket's speed increases at a constant rate, and it moves in a straight line.
Key points:
* Constant acceleration does not mean constant velocity: The object can be moving, but its speed will change at a constant rate.
* Constant acceleration is a simplified model: In real-world situations, acceleration may vary over time.
Let me know if you would like to explore any of these concepts in more detail!