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Do explosions typically exhibit increasing acceleration of the exploding material at some stage of the explosion?
You bet! That's the whole idea. An explosion, be it chemical, nuclear, or whatever, deposits a lot of energy into a small volume. This will raise the local pressure which in turn exerts forces on objects surrounding it. And, as you know, a la Newton: acceleration = force / mass.
(published on 07/06/2010)
Follow-Up #1: What about acceleration of acceleration?
This question is a follow up for "Do explosions accelerate constituents?". My question had to do with inceasing acceleration (jerk), not acceleration itself.
Well, sure. There has to be some positive value of d3
since the acceleration is zero moments before the explosion and finite moments afterward. There must be some non-zero value of the 'jerk'. Describing explosions in detail is a very difficult problem, I'm not sure how to calculate it myself. You need a very complicated gas-dynamics computer program to do it correctly.
(published on 07/12/10)
Follow-up on this answer.