(Answered) The position of an object moving along the x axis is given

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The position of an object moving along the x axis is given by x(t)=7.0t-3.0t^2 (with t in seconds, and x in meters).

A) What is the average velocity during the time interval from t=0.0 s to t=2.0 s?

B) What is the instantaneous velocity of the object at time t=1.0 s?

C) At what time does the object reach a maximal x position?

D) What is the instantaneous acceleration of the object at time t=0.0 s?

E) What is the average acceleration of the object from t=0.0 s to t=2.5 s?

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