سؤال قراءة ستيب محلول — المفردات في السياق (تدريب 6674)

(1) The velocities described in the above examples are average velocities. The velocity of an object at any moment in time is known as its instantaneous velocity. The instantaneous velocity is the speed in a stated direction at a particular moment in time. (2) Since displacement and velocity have both magnitude (size or strength) and direction, they are called vector quantities. These quantities cannot be specified specified completely by a number. They must be demonstrated using arrows. Another example of a vector quantity is acceleration. Speed, which has magnitude but not direction, is not a vector quantity. Like all vectors. velocity can also be represented represented graphically by an arrow whose length is proportional to its magnitude The word “represented” in Paragraph ((2) is closest in meaning to……….