A) 28 m
B) 16 m
C) 20m
D) 24m
Correct Answer: D
Solution :
Equation of motion for distance travelled in nth second is \[{{s}_{n}}=u+a\left( n-\frac{1}{2} \right)\] Now the distance travelled in 2nd second in \[8=a\left( 2-\frac{1}{2} \right)\] ?(i) Distance travelled in 5th second is \[{{s}_{5}}=0+a\left( 5-\frac{1}{2} \right)\] ?(ii) Now dividing (i) by (ii) we get \[{{S}_{5}}=\frac{9}{2}\times \frac{2}{3}\times 8=24\,m\]
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