Thank you. You're the second person that sent me to this site. Great help and much appreciated.
Thanks Russ Watters and Berkeman for your replies as well.
But weren't Arabs killing Jews in Palestine before there was an Israel? Before World War II? As I recall (I haven't got references handy) something like 79 Jews were killed in about 1936 -- (with a British Army armored unit watching). And this was not a unique occurrence.
It seems there...
A metal cylinder of 55kg, (0.2m in diameter), traveling at 2.5 km/sec strikes the earth. How big a crater can it be expected to make, given average characteristics for the ground where struck?