Taking the meatball and changing it into a golf ball as suggested, I believe the golf ball moving at a high rate of speed would penetrate a 1/4" piece of ply wood while leaving a nice hole. Assuming the truck hits a well supported piece of ply wood, it would either bowl it over or break it in half, or disintegrate it, depending on the speesd it hits at.3B43 said:The 'truck vs meatball' choice makes NO SENSE! Why? The 'correct' question, on this stupid example, is this:
With a 3/4" plywood wall in front of it, which one, the truck or meatball would go FARTHER if it struck the wall? I think we all know the answer to that one.
PLEASE go pick up a high school physics book and read up on the real difference between KE and Momentum
Sure, but then you get into an argument of efficiency. Which is easier, adding 25 grains to an arrow or adding 25fps to a bow?natec63 said:Ok, just found a good definition of mumentum:
Momentum is a property that tells us how hard it is to change the way an object is moving.
Obviously that is hugely important when arrows meet a rib or shoulder blade and I know understand why it's important. At the same time, momentum = mass * velocity . So if you are shooting a lighter weight at a higer speed, you could get the same momentum, correct?