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Motion In A Straight Line (Scalar, Vector, Distance, Displacement, Speed, Velocity?)

  1. Aug 21, 2010 #1
    Could you please help me understand how these terms relate to one another?

    Scalar, Vector, Displacement, Distance, Speed, Velocity, Accelaration, Position?

    So Distance is a scalar Quantity, what is a Scaler? Displacement is a vector quantity, what is a Vector? Is velocity just the unit like kilometres per hour? Speed is the distance travelled and doesn't require a direction.

    I need to know these terms.
  2. jcsd
  3. Aug 21, 2010 #2
    Re: Motion In A Straight Line (Scalar, Vector, Distance, Displacement, Speed, Velocit

    A scalar is anything that you can measure that just needs a number. Examples of a scalar are temperature, your age, how much money you have in the bank, how fast your car goes.

    A vector is anything that needs a number and a direction to tell you examples are the wind velocity, the force of gravity, where the Sun is.

    So yes, your last statement is correct.
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