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Starting from rest, acceleration of a pa...

Starting from rest, acceleration of a particle is `a = 2 (t-1)`. The velocity of the particle at `t = 5s` is

A

15 m/sec

B

25 m/sec

C

5 m/sec

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
`a = 2(t - 1)`
`rArr (dv)/(dt) = 2 (t - 1) rArr int_0^v dv = int_0^5 (2t - 2) dt`
`rArr v = [t^2 - 2t]_0^5 = 15m//s`
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