Final answer:
Acceleration is a change in velocity, which can be a change in speed or direction. It means an object is speeding up, slowing down, or changing its direction. This is seen in everyday situations like driving a car.
Step-by-step explanation:
In physics, acceleration is defined as a change in velocity, which can be a change in speed or direction. When an object accelerates, it means it is speeding up, slowing down, or changing its direction. The greater the acceleration, the greater the change in velocity over a given time.
For example, when you push down on the gas pedal in a car, the flow of gasoline to the engine increases, resulting in an increase in the car's velocity. This is acceleration because the car's speed is changing. Similarly, when you apply the brake pedal or turn the steering wheel, you are also causing acceleration because you are changing the car's velocity by either reducing its speed or changing its direction.