ch02速率(Speed)

Author: admin feynman 2016-06-18 06:58:53 Views: 463

 

 

速率:
速率是物體運動的快慢,或等價於路程的變化率。

 

Speed:
In kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity.

 

 


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