(August 24, 2018 at 10:49 am)Khemikal Wrote: Not the best vid (but they did do spine tests!).
If you find a full side shot..you'll notice that the rear of the arrow..the part being pushed, begins to accelerate before the leading tip. The mass of the point resists acceleration....and because arrows are designed and made of materials specifically to allow for this - they make a great and greatly exaggerated example of why pushing on the back of something doesn't mean the the front moves simultaneously.
I have to find it again, but I’ve seen a slow motion video of an automatic rifle being fired, and you see the rifle barrel actually deflect with each shot, and the receiver slightly bends as bolt slams forward, and the rifle noticeably compresses along it length before the recoil is transmitted to the firer’s shoulder.
