# What's a change in jerk called?

**URL:** <https://boards.straightdope.com/t/whats-a-change-in-jerk-called/571724>\
**Category:** Factual Questions\
**Created:** [February 17, 2011, 6:04pm UTC](https://boards.straightdope.com/t/whats-a-change-in-jerk-called/571724 "2011-02-17T18:04:08Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\
**Post date:** [February 18, 2011, 8:26pm UTC](https://boards.straightdope.com/t/whats-a-change-in-jerk-called/571724/21 "2011-02-18T20:26:41Z")

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It should be noted that, while the Hamiltonian of a system often corresponds to the total energy of a system, it doesn’t always. The Hamiltonian blowing up doesn’t mean any fundamental physical laws are being broken; it just means that Hamiltonian dynamics won’t be very useful for analyzing the system.

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