Test Academy | A particle moving in a straight line covers a distance of x cm in t second, where x = t3 + 6t2 – 15t + 18. What will be the velocity of the particle at the end of 2 seconds? 20cm/sec, 21cm/sec, 22cm/sec, 23cm/sec

Question

A particle moving in a straight line covers a distance of x cm in t second, where x = t3 + 6t2 – 15t + 18. What will be the velocity of the particle at the end of 2 seconds?

Options :

20cm/sec
21cm/sec
22cm/sec
23cm/sec

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