ReactNative Scrollview.onScrollEndDrag velocity.x means

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When we subscribe ScrollView.onScrollEndDrag it gives us nativeEvent. Which has velocity in it. The following shows how it's defined in typescript.

export interface NativeScrollEvent {
    contentInset: NativeScrollRectangle;
    contentOffset: NativeScrollPoint;
    contentSize: NativeScrollSize;
    layoutMeasurement: NativeScrollSize;
    velocity?: NativeScrollVelocity;
    zoomScale: number;
    /**
     * @platform ios
     */
    targetContentOffset?: NativeScrollPoint;
}

In velocity, we have x and y velocity as a number which is a negative or positive number as it decreases or increases. I want to know what does that 1 exactly means like 1 pixel per second or ...

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