Ballistic pendulum

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

A ballistic pendulum is a device for measuring the momentum of a small object, such as a bullet, moving at high speed. It is then possible to calculate the object’s velocity and kinetic energy.

Excerpt from the Wikipedia article “Ballistic pendulum”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: «Военная энциклопедия И. Д. Сытина». Том 4 (Санкт-Петербург; 1911)., Public domain, via Wikimedia Commons.