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3. An object moves along the line from point to point 2 in
time At.
a. Suppose that the object is speeding up. Which of the
labeled points A, B, or C could correspond to the
location of the object at time At/2? (Point B lies
halfway between points I and 2.) Explain.
A
B
Ï Ï
C
b. Suppose that the object is slowing down. Which of the labeled points A, B, or C could
correspond to the location of the object at time A1/2? Explain.

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