AnswersWA-Physical Science BSpeed and Velocity

Speed and Velocity Answers

4 verified answers
1
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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.
2
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Use the graph to determine acceleration and velocity. | Which segments show acceleration? | What is the velocity of segment B?

A
8 m/s
B
10 m/s
C
40 m/s
D
–40 m/s
3

A runaway shopping cart speeding up as it goes down a hill is accelerating due to a change in .

A
speed
B
direction
C
speed and direction
4

The acceleration of segment D is m/s2. | Rank segments A, B, and C from least acceleration to greatest acceleration. | Least: | Greatest:

A
A
B
B

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Speed and Velocity

Speed and Velocity Answers — WA-Physical Science…