Speed and Velocity Answers

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3

AB✔ C

A
A
B
B
C
C
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⇒ 22.4

Answer:

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Question illustration
Answers:
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Which statements describe the motion of the object represented by the graph? Select three options.

A
The object is moving away from the origin.
B
The object is moving towards the origin.
C
The object started at the origin.
D
The object started at 2 meters.
E
The object is traveling at a constant velocity.
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The object represented by this graph is moving

A
away from the origin at a constant velocity.
B
away from the origin at a decreasing velocity.
C
toward the origin at a constant velocity.
D
toward the origin at a decreasing velocity.
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✔ Car ACar BCar C

A
Car A
B
Car B
C
Car C
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Based on the graph, describe what is happening between 4 and 6 seconds.

A
The object is moving away from the start at a constant speed.
B
The object is not moving.
C
The object is returning to the start at a constant speed.
D
The object is changing speed.
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✔ -2-1012

A
-2
B
-1
C
0
D
1
E
2
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A 100-meter sprint is a race using only the straight side of a racetrack. A 400-meter sprint is a race that makes one complete lap around a racetrack. Why are velocity and speed the same for a 100-m sprint but not a 400-m sprint?

Answer:

In the 100m sprint, the displacement is 100 meters and the distance is 100 meters. This means speed and velocity are the same for the 100m sprint. In the 400m sprint, the distance is 400m, but the runners stop at the same place they start so the displacement is zero. Zero displacement means zero velocity.

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Car ACar B✔ Car C

A
Car A
B
Car B
C
Car C
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-2-1✔ 012

A
-2
B
-1
C
0
D
1
E
2
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What did you include in your response? Check all that apply.

A
Distance and displacement are the same in the 100-m sprint.
B
Velocity and speed are the same in the 100-m sprint.
C
Distance is 400 meters in the 400-m sprint.
D
Displacement is zero in the 400-m sprint.
E
Velocity is zero in the 400-m sprint.
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✔ Cars A and BCars B and CCars A and C

A
Cars A and B
B
Cars B and C
C
Cars A and C

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