You can also drop "stops moving", because that's included in "changes speed" (from something to zero).
When an object changes speed or changes direction, that's called "acceleration".
I dropped the first one from the list, because an object can be moving, and as long as it's speed is constant and it's moving in a straight line, there's no acceleration.
I think you meant to say "starts moving". That's a change of speed (from zero to something), so it's also acceleration.
