Why Do We Say Force Is a Vector Quantity?

Answer

People say that force is a vector quantity because the force has a magnitude and a direction. If something is defined with a magnitude or direction, it is a vector quantity. This is because it can be positive or negative.
Q&A Related to "Why Do We Say Force Is a Vector Quantity?"
A vector quantity is a measurement with a direction. A force is a vector quantity because if depends on direction.
http://wiki.answers.com/Q/Why_do_you_say_that_forc...
Speed does not (unlike velocity) describe the direction
http://www.chacha.com/question/why-do-we-say-veloc...
I don't completely understand your question, BUT what I do know is velocity is when you speed up or slow down where as speed is the average time is takes you to go from one point
http://answers.yahoo.com/question/index?qid=200709...
We do not say that force is "directly proportional" to change in momentum. We define it to be *exactly equal* to change in momentum. We define it to be that way because
https://uk.answers.yahoo.com/question/index?qid=20...
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