Motion in a Straight Line - Result Question 30

31. A body starts from rest, what is the ratio of the distance travelled by the body during the 4th and 3rd seconds?

[1993]

(a) 75

(b) 57

(c) 73

(d) 37

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Answer:

Correct Answer: 31. (a)

Solution:

(a) S4S3=0+a2(2×41)0+a2(2×31)=75

Equation of the motion of uniformly accelerated motion, the distance travelled in nth  sec is given by,

Sn=u+a2(2n1)



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