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A body moves in a plane so that the disp...

A body moves in a plane so that the displacements along the x and y axes are given by `x = 3t^3 and y = 4t^3`. The velocity of the body is

A

9t

B

15t

C

`15t^2`

D

`25t^2`

Text Solution

Verified by Experts

The correct Answer is:
C
`S = 6t + 3t^2`
`rArr v = (dS)/(dt) = 6 + 6t`
at t = 2, v = 18m/s
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