What it means:
* Change in velocity: Acceleration happens when an object's speed or direction changes.
* Rate of change: It measures how quickly the velocity changes.
Examples:
* Car accelerating: When a car speeds up, its velocity increases, so it's accelerating.
* Car braking: When a car slows down, its velocity decreases, meaning it's also accelerating (in the opposite direction of its motion).
* Turning a corner: Even if a car maintains the same speed, changing direction means its velocity changes, and therefore it's accelerating.
Important points:
* Units: Acceleration is usually measured in meters per second squared (m/s²) or feet per second squared (ft/s²).
* Positive and negative: Acceleration can be positive (speeding up) or negative (slowing down).
* Constant and variable: Acceleration can be constant (like a car accelerating at a steady rate) or variable (like a rollercoaster).
Let me know if you'd like more details or examples about acceleration!
