Figure 2-34 is a position versus time graph for the motion of an object along th

Question

Figure 2-34 is a position versus time graph for the motion of an object along the x axis. As the object moves from A to B:

(a) Is 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, for the time interval from D to E:
(d) Is the object moving in the positive or negative direction?

(e) Is the object speeding up or slowing down?

(f) Is the acceleration of the object positive or negative?

Finally, answer these same three questions for the time interval from C to D.
(g) Is the object moving in the positive or negative direction?

(h) Is the object speeding up or slowing down?

(i) Is the acceleration of the object positive or negative?

Repair Time in Hours Months Since Last Service 2.9 23.0 6 4.8 8 1.8 3 2.9 2 4.9 7 4.2 9 4.8 8 4.4 4 4.5 6 Type of Repair Electrical Mechanical Electrical Mechanical Electrical Electrical Mechanical Mechanical Electrical Electrical Repairperson Dave Newton Dave Newton Bob Jones Dave Newton Dave Newton Bob Jones Bob Jones Bob Jones Bob Jones Dave Newton

Explanation / Answer

a)negative direction

b)speeding up

c)negative

d)positive direction

e)speeding up

f)positive

g)not moving

h)not speeding nor down(no motion)

i)no acceleration

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