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A particle moves along the positive bran...

A particle moves along the positive branch of the curve `y = (x^(2))/(2)` where `x = (t^(2))/(2),x` and y are measured in metres and t in second. At `t = 2s`, the velocity of the particle is

A

`2hati-4hatj`

B

`4hati-2hatj`

C

`4hati+2hatj`

D

`2hati+4hatj`

Text Solution

Verified by Experts

The correct Answer is:
d
`v_(x)=(dx)/(dt)+v_(y)=(dy)/(dt)`
`vecv=v_(x)hati+v_(y)hatj`
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