On Thu, 02 Apr 2020 17:10:31 -0700, towsked wrote:

On Thursday, April 2, 2020 at 4:11:39 PM UTC-7, Dan Marotta wrote:
If you fire an AK-47 and a .22 pistol simultaneously and horizontally,
which round will hit the ground first?Â* There's quite a difference in
velocity between those two.Â* (A bored engineer/glider pilot here.)


Dan, 5J

s=ut +½ g t^2

Both land simultaneously at 0.56 +/- 0.01 secs. This assumes both guns
are fired at shoulder height by the same guy and were aimed accurately
horizontal. Under these conditions 'u' is zero so time of flight is just
free-fall time.

I've just timed this using a Seiko stopwatch while dropping the solid
alloy nosecone off a NATO ground attack practise rocket found some years
ago on the Helcheren target range in Belgium. Doing the experiment was
quicker than finding a measuring tape, measuring my shoulder height and
then calculating. Besides, it was more fun that way.


--
Martin | martin at
Gregorie | gregorie dot org