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The displacement (s ) of a particle depe...

The displacement (s ) of a particle depends on time (t) as s = `2at^(2)-bt^(3)`. Then

A

the particle will come to rest after a time `(4a)/(3b)`

B

the particle comes back to the starting point after a time `(2a)/(b)`

C

the acceleration is zero at a time `(2a)/(3b)`

D

the initial velocity is zero but the initial acceleration is not

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The correct Answer is:
A, B, C, D
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