Distance traveled in first second =s=ut+21at2=21at2 ( As u=0)
As s1=4 m for t=1 s
So, 21a×12=4⟹a=8 m/s2
Now ,to find the distance traveled in first two seconds.
t=2 s,a=8 m/s2
s2=21at2=21×8×22=16 s
So distance traveled in 2nd second is the difference between distance traveled by particle in first two seconds and first second.
Required distance=s2−s1=16−4=12 m
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