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The relation between time ' "t" ' and di...

The relation between time ' "t" ' and distance ' "x" ' is `t=alpha x^(2)+beta x` ,where `alpha` and `beta` are constants.The relation between acceleration "(a)" and velocity "(v)" is :

A

`a=-3 alpha v^(2)`

B

`a=-5 alpha v^(5)`

C

`a=-2alpha v^(3)`

D

`a=-4alpha v^(4)`

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