The distance x of a particle moving along a straight line from a fixed point on the line at time t after start is given by t = ax2 + bx + c (a, b, c are positive constants). If v be the velocity of the particle at the instant, then which one is correct?

The distance x of a particle moving along a straight line from a fixed

1.	The distance x of a particle moving along a straight line from a fixed point on the line at time t after start is given by t = ax² + bx + c (a, b, c are positive constants). If v be the velocity of the particle at the instant, then which one is correct?
A.	Moves with retardation 2av<sup>2</sup>
B.	Moves with retardation 2av<sup>3</sup>
C.	Moves with acceleration 2av<sup>3</sup>
D.	Moves with acceleration 2av<sup>2</sup>
Answer» C. Moves with acceleration 2av<sup>3</sup>

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The distance x of a particle moving along a straight line from a fixed point on the line at time t after start is given by t = ax2 + bx + c (a, b, c are positive constants). If v be the velocity of the particle at the instant, then which one is correct?

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The distance x of a particle moving along a straight line from a fixed point on the line at time t after start is given by t = ax² + bx + c (a, b, c are positive constants). If v be the velocity of the particle at the instant, then which one is correct?