Acceleration can catch you out!Versión en línea Lesson 17 por April Dina Loquinte 1 Understanding Acceleration Acceleration is the rate at which an object's velocity changes over time, meaning it can speed up, slow down (deceleration), or change direction, even at a constant speed, because velocity includes both speed and direction. It's a vector quantity, having both magnitude and direction, and is calculated as the change in velocity divided by the change in time 2 Positive acceleration means velocity increases over time (speeding up), while negative acceleration, also known as deceleration, means velocity decreases (slowing down). 3 Three Ways To Accelerate Speeding Up: Positive acceleration (velocity and acceleration vectors point the same way).Slowing Down: Negative acceleration or deceleration (velocity and acceleration vectors point opposite ways).Changing Direction: Even if speed is constant, changing direction means velocity changes, thus it's acceleration (e.g., a car in a circle). 4
