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A particle leaves the origin with an ini...

A particle leaves the origin with an initial velocity `vecu =3hati m/s` and a constant acceleration `veca = -((hati + hatj)/2) m/s^2`.
It's velocity `vecv` and position vector `vecr` when it reaches It maximum X-coordinates are

A

`vecv = 1.5 m/s`

B

`vecv = -3 hatj m/s`

C

`vecr = (4.5 hatj-2.25)m`

D

`vecr = (9hati-9hatj)m`

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The correct Answer is:
B, D
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