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Velocity and acceleration of a particle ...

Velocity and acceleration of a particle at time `t=0`are `u=(2 hati+3 hatj) m//s and a=(4 hati+3 hatj) m//s^2` respectively. Find the velocity and displacement if particle at `t=2s.`

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From`vecv=vecu+vecat` and `vecs=vecut+1/2vecat^(2)`
`vecv=(2hati+3hatj)+(2)(4hati+2hatj)=(10hati+7hatj)m//s`
`vecs=2(2hati+3hatj)+1/2(2)^(2)(4hati+2hatj)=(12hati+10hatj)m`
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