Pronunciation: /ækˌsɛləˈreɪ ʃən/ ?
When a car accelerates, it changes speed. If a car is
going 20 kilometers per hour (kph), and it
accelerates to 30 kph it has changed
speed by 10 kph. Acceleration is measured
in units change in speed (velocity) per unit of time.
|Figure 1: Acceleration||
If, at a point in time, an object
is going 50 meters per second (mps)
and 10 seconds later it is going 60
mps, the object's
1 m/s2 is read as, "One meter per second squared".
|Manipulative 1: Acceleration. Created with GeoGebra.||
Take an object is going 70 kph and
10 seconds later it is going 100
hours is not the same unit of measure as seconds, one must first change
the 10 seconds to hours:
So the acceleration is
Acceleration is measured using a
of speed or velocity divided by a unit of time. Speed is measured in distance divided by time.
Putting these together, speed can be measures in unit of distance divided by unit of time
squared. Some of the commonly used measures of acceleration are:
|Abbreviation||Unit of measure|
|m/h2||kilometers per hour squared|
|k/h2||kilometers per hour squared|
|m/s2||meters per second squared|
|Table 1: Units of Measure of Acceleration|
- acceleration. http://wordnet.princeton.edu/. WordNet. Princeton University. (Accessed: 2011-01-08). http://wordnetweb.princeton.edu/perl/webwn?s=acceleration&sub=Search+WordNet&o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&h=.
- McAdams, David. Velocity. allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 2009-03-12. http://www.allmathwords.org/article.aspx?lang=en&id=Velocity.
- McAdams, David. Length. allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 2009-03-12. http://www.allmathwords.org/article.aspx?lang=en&id=Length.
Cite this article as:
Acceleration. 2009-12-24. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/a/acceleration.html.
2009-12-24: Added "References" (McAdams, David.
2008-12-13: Simplified wording (McAdams, David.
2008-10-05: Expanded 'More Information' (McAdams, David.
2008-09-16: Corrected math error (McAdams, David.
2008-06-07: Corrected spelling errors (McAdams, David.
2008-04-16: Initial version (McAdams, David.