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加速度

File:Gravity_gravita_grave.gif · Wikimedia Commons · See Wikimedia Commons

EntityQ11376· pop 146· linked from 1,522 articles

速度的大小和/或方向隨時間變化的速率

AI overview

Acceleration is the rate at which an object's speed or direction of motion changes over time. It matters because understanding how quickly things speed up, slow down, or change direction is essential for describing motion in physics and engineering, from everyday situations like braking a car to launching spacecraft.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Physical quantity.name
Acceleration
Physical quantity.image
Gravity gravita grave.gif
Physical quantity.symbols
a
Physical quantity.unit
m/s, m·s, m s
Physical quantity.derivations
\mathbf{a} = \frac{d\mathbf{v

via Wikipedia infobox

Research

441,880 papers

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Wikidata facts

Subclass of
vector quantity
Followed by
jerk
Follows
velocity
Show 8 more facts
different from
acceleration
Commons category
Acceleration
discoverer or inventor
Pierre Varignon
topic's main category
Category:Acceleration
on focus list of Wikimedia project
Wikipedia:Vital articles/Level/4
recommended unit of measurement
metres per second squared
maintained by WikiProject
WikiProject Mathematics
Sources (6)

via Wikidata · CC0

Article · 中文

加速度是物理学中的一个物理量,是一个矢量,主要应用于经典物理当中,一般用字母表示,在国际单位制中的单位为米每二次方秒()。加速度是速度矢量對于时间的变化率,描述速度的方向和大小变化的快慢。 在经典力学中,牛顿第二定律说明了力和加速度成正比,這定律又稱為「加速度定律」。假設施加於物體的淨外力為零,則加速度為零,速度為常數,由於動量是質量與速度的乘積,所以動量守恆。在電動力學裏,呈加速度運動的帶電粒子會發射电磁辐射。

Abstract from DBpedia / Wikipedia · CC BY-SA

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