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1- A particle moves along the x axis. Its position is given by the equation x = 2.1 + 2.9t ? 3.5t2with x in meters and t in seconds.

(a) Determine its position when it changes direction.

(m)

(b) Determine its velocity when it returns to the position it had at t = 0? (Indicate the direction of the velocity with the sign of your answer.)

(m/s)

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Category:- Physics
Reference No.:- M9903544

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