The speed and strength of the impact does not make much difference at this point in time. In the US, walls are made of hollow sheet rock and the impact forces from a wall are much less. Knowing your walls are concrete just explains a bit about your impact.

We did not spend much time in Tel Aviv. Just to and from the airport. We toured the country. We stayed in Netanya (Four Seasons), Ramot ( a kibutz on the north east side of the Sea of Galilee), and at the King David Hotel in Jerusalem. It was only ten days but we saw and experienced a lot. We saw all of the historical Bible sites (Jewish and Christian) plus the Golan Heights, Bet Shean, Qumran and Masada. Israel was relatively peaceful in 1992 so we could tour safely. Israel is an amazing country. I wish I could afford to visit again.