A) \[\frac{2v(n-1)}{n}\]
B) \[\frac{v(n-1)}{n}\]
C) \[\frac{v(n+1)}{n}\]
D) \[\frac{2v(n+1)}{n}\]
Correct Answer: A
Solution :
Displacement in last 2 s \[=\frac{1}{2}a{{n}^{2}}-\frac{1}{2}a\,{{(n-2)}^{2}}\] \[=2\,a\,(n-1)\] Acceleration \[a=\frac{v}{n}\] \[(\because t=n\sec )\] Displacement in last \[2\,s=\frac{2\,v\,(n-1)}{n}\]You need to login to perform this action.
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