ANSWER

400 m

400 mHence, the distance covered (S) =400 m and option B is the correct answer .

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Verified answer

Explanation

Given

u=0

v=144kmph=144× ⁵/¹⁸ =40m/s

t=20sec

We know,

v=u+at

40=a×20

a=2m/s

2

Now,

s=ut+ ½at²

s= ¹/²at²=½ ×2×20² = 400m

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