The distance travelled s (in metre) by a particle in t seconds is given by, \[s={{t}^{3}}+2{{t}^{2}}+t.\]The speed of the particle after 1 second will be [UPSEAT 2003]

The distance travelled s (in metre) by a particle in t seconds is give

1.	The distance travelled s (in metre) by a particle in t seconds is given by, \[s={{t}^{3}}+2{{t}^{2}}+t.\]The speed of the particle after 1 second will be [UPSEAT 2003]
A.	8 cm/sec
B.	6 cm/sec
C.	2 cm/sec
D.	None of these
Answer» B. 6 cm/sec

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The distance travelled s (in metre) by a particle in t seconds is given by, \[s={{t}^{3}}+2{{t}^{2}}+t.\]The speed of the particle after 1 second will be [UPSEAT 2003]

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