* All objects that are accelerating are changing speed. Acceleration is the rate of change of velocity, and velocity includes both speed and direction.

* So, any object that is accelerating is also changing speed.

Here are some examples:

* A car speeding up: The car is accelerating, meaning its speed is increasing.

* A ball thrown upwards: The ball is accelerating due to gravity, and its speed decreases as it goes up.

* A satellite orbiting the Earth: While it might seem like the satellite is moving at a constant speed, it's constantly changing direction (accelerating) due to Earth's gravity.

Let me know if you have any other questions!