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日期:2024-08-08
2004年12月3日 ... 速度與速率的迷思(II). speed 和velocity. 這二個字有什麼差別呢? 對不是學物理的
人來說,這二個字的意思差不多,只不過speed 是很普遍的用字, ......
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日期:2024-08-11
Careful attention needs to be paid to writing out the known and unknown
measurements, the SI units involved, and the entering of numbers into your
calculator....
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日期:2024-08-07
In everyday use and 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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日期:2024-08-08
Definitions: Speed or Velocity? Speed is the rate of motion, or the rate of change
of position. It is expressed as distance moved (d) per unit of time(t). Speed is a ......
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日期:2024-08-06
Speed, velocity and acceleration. Average speed is distance divided by time.
Velocity is speed in a given direction. Acceleration is change in velocity divided
by ......
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日期:2024-08-07
16 Jun 2014 ... The average velocity only depends on the starting and ending point, not the path
but the speed depends on the path (in this definition)....
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日期:2024-08-12
2013年1月4日
Either can be used. Sometimes "d" is avoided for distance (even though it seems to be the ......