點解加速度是零叫均加速?

Well, actually i don't think when acceleration(加速度) is 0, there will still have average acceleration(均加速).So, i explain as the following:

When acceleration is 0, the object have no changes in velocity. Therefore, it is uniform veocity(均加速).

or explain by formula....

When a(acceleration)=0, use F=ma, F is 0.
So, there is no external force. By the newton first law, the object will move in uniform motion.

2007-04-20 23:23:16 補充：
F=ma is the newton second law...

係！書錯，你arm。讀physic，第一信實驗，無實驗時就信自己la

加速度=0 係勻速 唔係勻加速

2007-04-21 00:12:50 補充：
我肯定哩題我啱話曬我都 A 左physics A_A