Question

Lesson -
DATE
1
VAGE
ES
Measurement and motion
said
Answer each of the following questions in few sentences
when is an
object said to be in motion ?
An object is
to be at motion of its position
changes with time with respect to a stationary
observer for a reference
point)
for eagi
the passing
ors sitting
moving bus are in motion with
observer standing outside
bur
in
respect
to an
the
de
2. What are SI unites ?
why
We need standard
Por
measurement ?
- The SI units were adopted in 1960- This system is
known as International system of units The si
unets have now been accepted by most of the countores.
A Standard unit is a
measure which has a tixed value.
not
vary
from
or place
A SI System of units is preferred over other enets
because of the following seasns.
It does
person​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

a system of units based on the metric system and developed and refined by international convention especially for scientific work —abbreviation SI.