A particle moving in a straight line with uniform acceleration is observed to be a distance a from a fixed point initially.It is at distance b,c,d from the same point after n,2n,3n seconds.The acceleration of the particle is

Options

(a) (c-2b+a)/n²
(b) (c+b+a)/9n²
(c) (c+2b+a)/4n²
(d) (c-b+a)/n²

Correct Answer:

(c-2b+a)/n²

Explanation:

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