Question

A starts from rest and moves with acceleration `a_(1)`. Two seconds later B starts from rest and moves with an acceleration `a_(2)`. If the displacement of A in the `5^(th)` second is the same as that of B in the same interval, the ratio of `a_(1)` to `a_(2)` is
A. `9:5`
B. `5:9`
C. `1:1`
D. `1:3`

Answer 1

Correct Answer - B
`S_(1)=(a)/(2)(2n-1),S_(2)=(a)/(2)(2n-1)`
According to given prob. `S_(1)=S_(2)`