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The acceleration of the particle at t = 2 sec is

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The distance x, in metres, travelled by a particle in time t seconds is given by x = 0.5 t3 + 2t2 

 The acceleration of the particle at t = 2 sec is

(a) 2 m/s2 

 (b) 4 m/s2 

 (c) 8 m/s2 

 (d) 10 m/s2

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Correct option: (d) 10 m/s2

Explanation:

a = 3t + 4

at = 2 sec = 3 × 2 + 4 = 10 m/sec2 

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