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Irwin - "We did hit harder than any of the other flights! And I was startled, obviously, when I said, 'Bam!' (Laughing) And I think Dave didn't particularly appreciate my comment, that he made a hard landing on the Moon!" I have been able to find estimates of the vertical speed at touchdown on five of the six landings. Neil Armstrong's was the lowest at 1.7 feet/second because he didn't get the engine shutdown until after the footpads were on the surface. On Apollo 12, 14, and 17, the landing speeds were all between 3.0 and 3.5 feet/second. Dave's was by far the highest at 6.8 fps, most likely because he was the fastest to hit the engine stop button and, therefore, fell the farthest.
Scott - "There was a rumble when we landed. I think all the equipment on board rattled. It seemed as if I could hear it all (despite the helmet he was wearing) when we landed, like you would shake the vehicle. Couldn't you hear that?" Irwin, - "Yes, I agree."
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