Question

please solve this problem!

Answer 1

Match the ans....is this correct

Answer 2

Hope u like my process
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A formula is there to find the distance travelled by body in nth second.

$= > \underline{ \green{ \bold{s_{n} = u + \frac{a}{2} (2n - 1)}}}$
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Since here the body is falling freely,

=> Initial velocity (u) = 0

=> a = g = 9.8 m/s (constant term)

So,..
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=> Distance travelled in nth second is directly proportional to (2n-1)
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Now,..
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$= > \bf \frac{s _{1} }{ s_{2}} = \frac{ \blue{(2 \times 4) - 1}}{ \blue{(2 \times 5) - 1}} = \blue{ \frac{8 - 1}{10 - 1} } \\ \\ = > \bf \frac{ s_{1} }{ s_{2} } = \blue{ \frac{7}{9} } \\ \\ = > s_{1} : s_{2} = \underline{\blue{ \it{7 :9 }}}$

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