1. What do you understand by the term 'reference
point'?
2. Name any four physical quantities related to
motion.
3. Define motion.
4. What is origin?
5. Explain three dimensional motion along a straight
line with an example.
6. Define linear motion with an example.
7. When is a body said to be at rest?
8. What is mechanics?
plz answer all the questions v. fast
Answers
Answer:
1)reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point. Objects that are fixed relative to Earth – such as a building, a tree, or a sign - make good reference points
2)physics, there are sevorigin, source, inception, root mean the point at which something begins its course or existence. origin applies to the things or persons from which something is ultimately derived and often to the causes operating before the thing itself comes into being.en fundamental physical quantities that are measured in base or physical fundamental units:length, mass, time, electric current temperature, amount of substance, and luminous intensity.
3)Motion, in physics, change with time of the position or orientation of a body. Motion along a line or a curve is called translation. ... In both cases all points in the body have the same velocity (directed speed) and the same acceleration (time rate of change of velocity).
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