Let's not forget that our general entertainment has a lot to do with this.
How many times have we watched a movie where a guy gets shot and the force of the bullet is so much that the guy goes flying.
Now, think about it. Newton's law applies: For every action, there is an equal and opposite reaction. If the bullet is packing enough of a wallop to knock a 180 pound man flying backwards, what about the poor schmoe who was firing the gun? Why didn't he get tossed back, too? Why does he have a just a little flick in his wrist?
But, just to check, the guys at
Mythbusters decided to check this out. They hung a pig from a hair drop. Any significant pressure on the corpus would make it fall off the hook.
No matter what, though, that pig stayed on the hook. Nine millimeter, .22, .357, .44, rifles, nothing could get that pig to fall off. Only when they started getting into machine guns could they get the pig to budge...and then it did only that: It budged. It fell off the hook straight down, no dramatic blast back.
With so many people not doing any sort of practical physics and with movie physics so horrendously bad, I'm not that surprised that people manage to have absolutely no idea what is considered reasonable for a physical action.
Rrhain
WWJD? JWRTFM!