Speed and Velocity Answers

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Which statement correctly describes the differences between positive and negative acceleration?

A
Positive acceleration describes a change in speed; negative acceleration describes no change in speed.
B
Positive acceleration describes no change in speed; negative acceleration describes a change in speed.
C
Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed.
D
Positive acceleration describes a decrease in speed; negative acceleration describes an increase in speed.
11

What is the acceleration of the car at segment C?

A
30 m/s2
B
–30 m/s2
C
40 m/s2
D
–40 m/s2
12

Which graph shows acceleration?

A
Option
B
Option
C
Option

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