Several times the speed of sound? That is meaningless when there is no media for the sound waves.
I think a better unit might be furlongs per fortnight.
"List of artificial objects on the Moon"<p><a href="https://en.wikipedia.org/wiki/List_of_artificial_objects_on_the_Moon" rel="nofollow">https://en.wikipedia.org/wiki/List_of_artificial_objects_on_...</a><p>It's a lot more than you might think, and I couldn't find a comprehensive list of the non-spacecraft objects, some of which are hinted at in the first paragraph.
The later Apollo missions (13-17) deliberately crashed their 3rd stages into the moon, in part to provide a signal for the seismometer packages left at each of the landing sites. They hit the moon a little faster than the Falcon 9 2nd stage will hit (2.6km/s vs 2.43km/s for the new one).<p>All of those impact sites have been located but the last one wasn't pinpointed until 2016:
<a href="https://www.cbsnews.com/news/moon-mystery-solved-apollo-rocket-impact-site-finally-found/" rel="nofollow">https://www.cbsnews.com/news/moon-mystery-solved-apollo-rock...</a>
Let's make it intentional and controlled then.
inb4 wreckage on the moon that stays there forever
What I think is very ironic is that Blue Origin actually beat SpaceX to Mars, after a decade of SpaceX "make life multiplanetary". A few months after Blue Origin did that SpaceX announced now they'll just go to the Moon, no more Mars.<p><a href="https://www.nasa.gov/news-release/nasa-blue-origin-launch-two-spacecraft-to-study-mars-solar-wind/" rel="nofollow">https://www.nasa.gov/news-release/nasa-blue-origin-launch-tw...</a>