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Qno:-23
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BrainlyHeart751:
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Sorry I m not able to solve this but hope u can understand it concept by taking an example so
Example:- If a body starts from rest and travels 120cm in 6th sec then what is its acceleration
Answer:- we know that
snth (displacement in n th second ) = u + a/2 (2*n - 1 )
where
u = 0 (since body starts from rest)
so, we have
snth = (a/2).(2n - 1)
or
a = 2snth / (2n - 1)
here,
displacement in 6 th second, s = 120 cm = 1.2 m
n = 6
so,
a = (2x1.2) / (2x6 - 1)
so,
a = 2.4/11
thus, acceleration will be
a = 0.218 m/s2
Hope it helps u mark as brainliest please
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