PDF Notes: CHAPTER 2 VECTORS AND SCALARS -2024 NOTES_250120_194132

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    What defines a scalar quantity?

    Specified by magnitude only.

    What distinguishes a vector from a scalar?

    Vectors include direction along with magnitude.

    What is displacement?

    Distance with a specified direction.

    How are vectors represented graphically?

    As arrows indicating direction and length for magnitude.

    What is a negative vector?

    Same magnitude as the original but opposite direction.

    What is a unit vector?

    A vector with a magnitude of one.

    What is a position vector?

    Indicates location relative to a reference point.

    What is a zero vector?

    Has zero magnitude and undefined direction.

    What are parallel vectors?

    Vectors with an angle of 0 degrees between them.

    What is the triangle law of vector addition?

    Vectors are added by connecting head to tail.

    What is the parallelogram law of vector addition?

    Resultant is the diagonal of a parallelogram formed by two vectors.

    How do you subtract vectors graphically?

    Add the negative of the vector to be subtracted.

    What are the components of a vector?

    Projections along coordinate axes that define the vector.

    How do you find the magnitude of a vector from its components?

    Use the Pythagorean theorem.

    What happens when you multiply a vector by a scalar?

    The magnitude changes, direction may reverse.

    What are equal vectors?

    Vectors with the same magnitude and direction.

    What are co-planar vectors?

    Vectors that lie in the same plane.

    What is the polygon law of vector addition?

    Resultant is the closing side of a polygon formed by vectors.