The figure below is a position versus time graph for the motion of an object alo

Question

The figure below is a position versus time graph for the motion of an object along the x axis. Consider the time interval from A to B. (a) s the object? moving in the positive or negative direction? (b) Is the object speeding up or slowing down? (c) Is the acceleration of the object positive or negative? Next, consider the time interval from D to E. (d) Is the object moving in the positive or negative direction? (e) s the object speeding up or slowing down? (f) s the acceleration of the object positive or negative? (g) Finally, answer these same three questions for the time interval from C to D. [GSE 2-82]

Explanation / Answer

Here , for considering time between A and B

a) as the position is decreasing ,

the object is moving in the positive direction

b)

as the slope is becoming more negative ,

the object is speeding up

c)

as the velocity is becoming more negative

the acceleration is negative

for D to E

d)

as the position is increasing , the object is moving in the positive direction

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