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The displacement of a particla moving in...

The displacement of a particla moving in straight line is given by `s=t^(4)+2t^(3)+3t^(2)+4`, where s is in meters and t is in seconds. Find the
(a) velocity at `t=1 s`, (b) acceleration at `t=2 s`,
(c ) average velocity during time interval `t=0` to `t=2 s` and
(d) average acceleration during time interval `t=0` to `t=1 s`.

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