Here's a breakdown:
* Change in Speed: If an object is speeding up or slowing down, it is accelerating.
* Change in Direction: Even if an object is moving at a constant speed, if its direction of motion changes, it is still accelerating. Think about a car going around a curve.
The key takeaway is that any change in velocity, regardless of whether it's a change in speed, direction, or both, results in acceleration.
To cause this change in velocity, a force must be applied. This force can be a push, a pull, friction, gravity, or any other influence that causes the object to change its motion.
In summary:
* Acceleration = Change in Velocity
* Change in Velocity can be in speed or direction (or both)
* A Force is required to cause acceleration
