Kinematics 2 Question 5

7. A small block slides without friction down an inclined plane starting from rest. Let sn be the distance travelled from t=n1 to t=n. Then, snsn+1 is

(a) 2n12n

(b) 2n+12n1

(c) 2n12n+1

(d) 2n2n+1

(2004, 2M)

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Answer:

Correct Answer: 7. (c)

Solution:

  1. Distance travelled in nth  second is, sn=u+an12a

Given, u=0

snsn+1=an12aa(n+1)12a=2n12n+1

Correct option is (c).



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