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The position of a person pacing in a hall is given by the (x(t)) curve in Figure P3.6. During which time interval(s) is the acceleration

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The position of a person pacing in a hall is given by the \(x(t)\) curve in Figure P3.6. During which time interval(s) is the acceleration 

(a) positive

(b) negative?

(c) Is the acceleration ever zero during the 4-s interval shown?

Data from Figure P3.6

image text in transcribed

0 1 2 3 2 (5)

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