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x and y co-ordinates of a particle movin...

`x` and `y` co-ordinates of a particle moving in `x-y` plane at some instant of time are `x=2t` and `y=4t`.Here `x` and `y` are in metre and `t` in second. Then
The distance travelled by the particle in a time from `t=0` to `t=2s` is ………`m`

A

`2sqrt(3)`

B

`4sqrt(5)`

C

`sqrt(2)`

D

`3sqrt(40)`

Text Solution

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The correct Answer is:
B
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