# Consider the following combinations of signs and values for velocity and acceleration of a particle with respect

## Question:

Velocity Acceleration

a. Positive Positive

b. Positive Negative

c. Positive Zero

d. Negative Positive

e. Negative Negative

f. Negative Zero

g. Zero Positive

h. Zero Negative

Describe what a 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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