Here's a breakdown:
* Velocity: Velocity is the speed of an object in a given direction. It's a vector quantity, meaning it has both magnitude (speed) and direction.
* Change in Velocity: This means how much the velocity of an object has changed. For example, a car speeding up or slowing down.
* Time: The duration over which the change in velocity occurs.
Formula:
Acceleration (a) = (Final Velocity (v) - Initial Velocity (u)) / Time (t)
Units:
* Acceleration is typically measured in meters per second squared (m/s²)
Important Notes:
* Positive Acceleration: Means the object is speeding up.
* Negative Acceleration: Means the object is slowing down. This is also known as deceleration.
* Zero Acceleration: Means the object is moving at a constant speed and direction.
Example:
A car starts from rest (initial velocity = 0 m/s) and accelerates to a final velocity of 20 m/s in 5 seconds.
Acceleration = (20 m/s - 0 m/s) / 5 s = 4 m/s²
