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Consider the following combinations of signs and values for the velocity and acceleration of a particle with respect to a one-dimensional x-axis:
Velocity
Acceleration
a.
Positive
b.
Negative
c.
Zero
d.
e.
f.
g.
h.
Describe what the particle is doing in each case and give a real-life example for an automobile on an east- west one- dimensional axis, with east considered the positive direction.
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