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A body starting from rest moves with con...

A body starting from rest moves with constant acceleration. The ratio of distance covered by the body during the 5th second to that covered in 5 s is :

A

` (9)/(25)`

B

` (3)/(5)`

C

` (25)/(5)`

D

` 25`

Text Solution

Verified by Experts

The correct Answer is:
A
Distance covered in 5s
` " " s_1 = (1)/(2) at ^(2)`
` = (1)/(2) a(5)^(2)`
` " " (25a)/(2)`
Distance covered in 5th second
` s_2= (1)/(2) xx a (2 xx 5-1) `
`= (9)/(2) a`
` (s_2)/(s_1) = (9)/(25) `
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