per second per second

adverb

: per second every second
used of acceleration

Examples of per second per second in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Using that value for the initial speed and a time of 36 seconds gives an acceleration of 0.75 meters per second per second. WIRED, 29 Sep. 2023 When the field was slowly ramped down, the anti-hydrogen atoms drifted down like maple leaves in October and at the same rate of downward acceleration, or g force, as regular atoms: about 32 feet per second per second. Dennis Overbye, New York Times, 27 Sep. 2023 So, an acceleration of 0 meters per second per second means that the velocity won't change. Rhett Allain, Wired, 11 Feb. 2022 Milgrom noticed that in diffuse systems like this, Newton’s laws begin to falter — and make untrustworthy predictions — whenever gravitational acceleration dips below a specific threshold, 10-10 meters per second per second, 100 billion times weaker than the force of gravity felt on Earth. Steve Nadis, Discover Magazine, 27 May 2015

Word History

First Known Use

1916, in the meaning defined above

Time Traveler
The first known use of per second per second was in 1916

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Cite this Entry

“Per second per second.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/per%20second%20per%20second. Accessed 9 Sep. 2025.

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