Question

What do you mean by 'distance covered in 4th seconds'. ​

Answer 1

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ANSWER

if it travels 14cm in the fourth second of motion, that means that it means it travels 14cm from t=3 seconds to t=4 seconds .

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Answer 2

Answer:

At 2nd second, velocity of body a m/s ; distance covered during 2nd and 4th second means travel duration 3 s. hence distance covered in 2nd and 4th second = a×3 +(1/2)×a×3×3 = 7.5×a = 12 or a = 1.6 m/s2.