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The co-ordinates of a moving particle at...

The co-ordinates of a moving particle at any time t are give by `x = at^2` and `y=bt^2` . The speed of the particle is

A

2t (a+b)

B

`2tsqrt(a^2+b^2)`

C

`2tsqrta^2+b^2`

D

`sqrta^2+b^2)`

Text Solution

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The correct Answer is:
B
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