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The equation of displacement of a particle is x(t) = 5t^2 - 7t + 3. The acceleration at the moment when its velocity becomes 5 m / sec is :

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The equation of displacement of a particle is x(t) = 5t2  - 7t  + 3. The acceleration at the moment when its velocity becomes 5 m / sec is :

(A)   8 m/ sec2

(B)  3 m/sec2

(C)  7 m/ sec2

(D)  10 m / sec2

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Correct option  (D) 10 m / sec2

Explanation:

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