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If the velocity of a paraticle moving al...

If the velocity of a paraticle moving along x-axis is given as `v=(4t^(2)+3t-1)m//s` then acceleration of the particle at `t=1sec` is :

A

`11 m//sec ^(2)`

B

`8 m//sec ^(2)`

C

`7 m //sec^(2)`

D

`5 m//sec^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`v=4t ^(2)+3t-1`
`(dv)/(dt) =ac c^(n) =8t +3`
` a|_(t=1)=8 xx1+3=11m//sec ^(2)`
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