Posted by **Anonymous** on Tuesday, January 14, 2014 at 9:31pm.

If the position of a particle is given by x = 35t - 7t^3, where x is in meters and t is in seconds, answer the following questions.

(a) When, if ever, is the particle's velocity zero? (Enter the value of t or 'never'.)

(b) When is its acceleration a zero?

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