* Speed is the rate at which an object covers distance. It only tells you how fast something is moving.
* Acceleration is the rate of change of velocity. Velocity includes both speed and direction.
Scenario:
Imagine a car driving around a circular track at a constant speed. Even though the car's speed remains the same, its direction is constantly changing. Because velocity is a combination of speed and direction, the car's velocity is changing, which means it's accelerating.
Types of Acceleration:
* Tangential Acceleration: This is the acceleration that changes the magnitude of the velocity (speed).
* Centripetal Acceleration: This is the acceleration that changes the direction of the velocity.
In the example of the car on the track:
* Tangential Acceleration: Zero, since the speed is constant.
* Centripetal Acceleration: Present, because the direction is changing.
Key Takeaway:
A body can have a uniform speed but still experience acceleration if its direction is changing.
