How many of you, like us, struggled to articulate to your physics teacher the difference between velocity and speed? To most of us in the office it remains a mystery and is as difficult a question to answer today as it was all those years ago. Thanks to the wonder of Google we have found what can only be described as a text book answer to this challenging question;
In physics, speed is defined as the rate of increase (or decrease) of distance travelled, with time. Linear velocity is the rate of increase (or decrease) of distance traversed by a body in a particular direction. Speed is defined with the omission of reference to direction. Thus, velocity is a vector quantity and speed is a scalar one.
Is everything clear now? (Well, not really, but let’s move on)
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