Which of the following sentences about the velocity of an object is not true?
a) the objects velocity is a scalar quantity .
b) when the speed of the object changes, the velocity of the object changes .

-- Velocity is the combination of speed and direction.
-- When the speed of the object changes, so does the velocity.
-- When the direction of the object's motion changes, so does the velocity.
-- Velocity is a vector quantity.

-- The object's velocity is NOT a scalar quantity.  (A)

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