Science q and a on science ch- motion and measurement p2

Hello friends in this article you are going to read about science.

1. Why can't a pace or a foot be a standard unit of measurement ?
Ans- A pace or a foot can't be a standard unit of measurement because the size of each person's foot or pace is different.

2. What is motion?
Ans- The motion is the changing of place.

3. What is rectilinear motion?
Motion occurs along a straight line is called rectilinear motion.
eg- Parade of soldiers.

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