test yourself on the key ideas that you have learned from this lesson. fill in the blanks with the appropriate words or phrases to make each statement correct. write your answer on a separate sheet of paper.

1. the rate of the distance travelled in a given period of time is called_________.
2. _______ is the amount of space between two objects.
3. A measurable period during which an action, process or condition exits or continues is defined as________.
4.________ is referred to as the ratio of distance and time.
5._________ is the rate at which an object covers a distance.


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