* Speed: Decreasing speed means the object is covering less distance in the same amount of time.
* Direction: Even if the speed remains constant, a change in direction means the velocity is decreasing. This is because velocity is a vector quantity, meaning it has both magnitude (speed) and direction.
Here are some important points to remember:
* Deceleration is a term often used to describe decreasing velocity. It's important to note that deceleration is not necessarily a decrease in speed. It is simply a decrease in velocity.
* Negative acceleration can also be used to describe decreasing velocity, but it's important to remember that acceleration is a vector quantity, and negative acceleration can also mean accelerating in the opposite direction.
Examples:
* A car slowing down at a red light.
* A ball thrown straight up in the air. As it rises, its velocity decreases until it reaches its highest point, where it momentarily stops before falling back down.
* A car turning a corner at a constant speed. While the speed stays the same, the change in direction means the velocity is decreasing.
To summarize:
Decreasing velocity means the object is either slowing down, changing direction, or both.
