Motion in a Straight Line - Result Question 18

18. The distance travelled by a particle starting from rest and moving with an acceleration 43ms2, in the third second is:

[2008]

(a) 6m

(b) 4m

(c) 103m

(d) 193m

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Answer:

Correct Answer: 18. (c)

Solution:

  1. (c) Distance travelled in the nth second is given by Sn=u+a2(2n1)

Given u=0,a=43ms2,n=3

Sn=0+43×2(2×31)=46×5=103m



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