Question

why do you think accurate measurements of time became possible much after accurate measurement of length and mass​

Answer 1

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If the length is $\bold{accurate,}$ time period could be accurate.


Time is $\bold{calculated}$ using the physical quantities that depend on the length and mass of objects.


Only when these quantities can be measured accurately, then time durations can be measured $\bold{accurately.}$


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$\bold{Extra\:knowledge:-}$


The time measured by quartz clocks is much more accurate than that by the clocks available earlier.


$\bold{Note:-}$


The quartz clock is an $\sf{\underline{electronic\: clock.}}$


It uses quartz crystal for the oscillator of the clock.


The oscillation frequency of quartz crystal is precise compared to the mechanical clocks.


$\bold{Therefore,}$


Quartz clocks are $\sf{\underline{more\:accurate}}$ than mechanical clocks. 


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Answer 2

Answer:

Explanation:

also it is because of physical quantities