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A particle moves along the positive bran...

A particle moves along the positive branch of the curve y =2x2where x =2t2,where x and y are measured in metre and t in second. At t = 2 sec, the velocityof the particle is -

A

`(2hati-4hatj)m//sec`

B

`(2hati+4hatj)m//sec`

C

`(2hati+2hatj)m//sec`

D

`(4hati-2hatj)m//sec`

Text Solution

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The correct Answer is:
B
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