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[–]magnora7 1 insightful - 1 funny1 insightful - 0 funny2 insightful - 1 funny -  (2 children)

Yeah the shock wave moves down the stick at the speed of sound in that material. In extremely rigid materials the speed of sound approaches the speed of light, but can never surpass it.

[–]pitterpatterwater 2 insightful - 1 funny2 insightful - 0 funny3 insightful - 1 funny -  (1 child)

It's why a perfectly rigid material is impossible.

[–]magnora7 1 insightful - 1 funny1 insightful - 0 funny2 insightful - 1 funny -  (0 children)

Good point. I suppose anything that's "material" and has rest mass can't travel at the speed of light by definition