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The distance s (in cm) travelled by a pa...

The distance s (in cm) travelled by a particle in t seconds is given by, `s=t^3+2t^2+t`. The speed of the particle after 1s will be :

A

`2 cm//s`

B

`8 cm//s`

C

` 6 cm//s`

D

none of these

Text Solution

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The correct Answer is:
B
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