3. How do you measure the distance between two points?
C. By getting the length
Explanation: Two points create a line, a line has no time nor width. However, it has length.
4. Speed is ...?
C. Always measured in terms of a unit distance divided by a unit of time.
Explanation: The ' measure of how fast something is moving ' IS NOT SPEED. It is not speed because it does not indicate the distance and time covered during the movement/motion.
Speed should always be like this: km/hr. or m/s, etc.
5. It is the world standard for measurement.
A. Metric System
Explanation: Metric System is the standard system for measurement ( cm, m , etc. ) while meter and ruler are instruments for measuring.
6. How fast are you going if you run 12 kilometers in 2 hours?
C. 6km/h
Explanation: 12 divided by 2 is 6.
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