Question

Q) A particle stars its motion from rest under the action of a constant force. If the distance covered in first 10 seconds is (s1) , and that covered in the first 20 seconds is (s2) then :-
(1) (s2) = 2(s1)
(2) (s2) = 3(s1)
(3) (s2) = 4(s1)
(4) (s2) = (s1)
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Answer 1

$\large\bf{\underline\blue{Good \: Evening↝}}$

$S_{1} = \frac{1}{2} a {(10)}^{2}$

$S_{2} = \frac{1}{2} a {(20)}^{2}$

$\frac{ S_{1} } {S_{2} } = \frac{100}{200}$

$S_{2} = 4 S_{1}$

Therefore, option (3) $S_{2} = 4 S_{1}$ is correct.