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    Matos4206's Avatar
    Matos4206 Posts: 1, Reputation: 1
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    #1

    Apr 26, 2007, 05:10 PM
    Speed and its Formula
    I've been slacking in class. Today my science teacher gave a lesson on speed and its formula and I missed it. I was given homework on it but I don't have an understanding on how to complete it.
    SameOldSituation's Avatar
    SameOldSituation Posts: 66, Reputation: 32
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    #2

    Apr 26, 2007, 05:30 PM
    Is this a question? Or a declarative statement?

    Well, speed is similar to velocity, so v=x/t (or, dx/dt if you're in calc). However, you use distance, rather than displacement. So I guess it's s=d/t. Anyway, it's speed = distance divided by time. So, you travel 14 feet per second or something like that. You travel 14 feet per every one second.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #3

    Apr 27, 2007, 07:32 AM
    One other nuance - speed is a "scalar," meaning it has a magnitude but no direction, while velocity is a vector, meaning it has both a magnitude and direction. Thus if a car is heading north on the highway at 50 MPH, and a truck is heading south at 50 MPH, they both have the same speed, but their velocities are different. Treating velocity as a vector is what allows you to determine things like relative velocities of two objects, or the acceleration of an object that is moving in a circle at a constant speed.
    sheshan's Avatar
    sheshan Posts: 2, Reputation: 1
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    #4

    May 31, 2012, 03:49 AM
    what is speed? Speed of a moving body is the distance travelled by it in unit time
    S = D / T
    Speed = Distance / Time
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #5

    May 31, 2012, 05:49 AM
    Quote Originally Posted by sheshan View Post
    what is speed? Speed of a moving body is the distance travelled by it in unit time
    S = D / T
    Speed = Distance / Time
    Sheshan - didn't you notice that this question was asked and answered over 5 years ago?? There's no value in providing a response that merely duplicates what was said before, especially since it was so long ago.
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