A particle is moving in a straight line according as \[s=45\,t+11{{t}^{2}}-{{t}^{3}}\]then the time when it will come to rest, is

A particle is moving in a straight line according as \[s=45\,t+11{{t}^

1.	A particle is moving in a straight line according as \[s=45\,t+11{{t}^{2}}-{{t}^{3}}\]then the time when it will come to rest, is
A.	? 9 seconds
B.	\[\frac{5}{3}\]seconds
C.	9 seconds
D.	\[-\frac{5}{3}\]seconds
Answer» D. \[-\frac{5}{3}\]seconds

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A particle is moving in a straight line according as \[s=45\,t+11{{t}^{2}}-{{t}^{3}}\]then the time when it will come to rest, is

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