per second per second


Definition of per second per second

: per second every second used of acceleration

Examples of per second per second in a Sentence

Recent Examples on the Web So, an acceleration of 0 meters per second per second means that the velocity won't change. Rhett Allain, Wired, 11 Feb. 2022 However, with a downward-pulling gravitational force, Drake should have a vertical acceleration of -9.8 meters per second per second (due to the gravitational field). Rhett Allain, Wired, 26 Nov. 2021 But still, there is just one more thing to consider: Guy's acceleration is calculated in units of meters per second per second. Rhett Allain, Wired, 27 Aug. 2021 Just as speed tells you how fast your position changes, acceleration describes how your speed changes in meters per second per second (m/s2). Popular Mechanics Editors, Popular Mechanics, 15 Sep. 2019 In the vertical direction, the ball starts with zero vertical velocity and then accelerates downward at 9.8 meters per second per second (due to the gravitational force). Adam Rogers, WIRED, 10 July 2019 And, though the acceleration produced is small (1mm per second per second), there is little in the vacuum of space to slow the craft down. The Economist, 21 Sep. 2017 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'per second per second.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of per second per second

1916, in the meaning defined above

Learn More About per second per second

Time Traveler for per second per second

Time Traveler

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

See more words from the same year

Dictionary Entries Near per second per second


per second per second


See More Nearby Entries 

Statistics for per second per second

Cite this Entry

“Per second per second.” Dictionary, Merriam-Webster, Accessed 26 Sep. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!