Let’s go through each question one by one, based on standard graph interpretation for distance-time and speed-time graphs.
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Question 1:
> *What is happening in the graph between 30 and 40 minutes?*
This is a
distance vs. time graph (y-axis = distance from school, x-axis = time in minutes).
- Between 30 and 40 minutes, the line is
horizontal — meaning distance is not changing over time.
- If distance isn’t changing, Sarah is
not moving.
✔ Correct Answer:
A. Sarah is not moving
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Question 2:
> *What is happening in this graph from point A to B? HINT: Look at the axis labels.*
The graph shows
Speed (m/s) on the y-axis and
Time (seconds) on the x-axis — so this is a
speed-time graph.
- From point A to B, the line is
sloping downward — meaning speed is decreasing over time.
- When speed decreases over time, the object is
decelerating.
✔ Correct Answer:
C. The object is decelerating.
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Question 3:
> *What is happening at D?*
This is a
distance vs. time graph (y-axis = distance, x-axis = time).
- At point D, the line is
curving upward, and getting
steeper as time increases.
- In a distance-time graph, a steeper slope means faster speed.
- Since the slope is increasing (curve gets steeper), the object is
accelerating.
✔ Correct Answer:
C. Accelerating
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Question 4:
> *What is happening at A?*
Same graph as Question 3 — distance vs. time.
- At point A, the line is
straight and sloping upward — meaning constant slope.
- Constant slope in a distance-time graph means
constant speed.
- Since it’s sloping upward, the object is
moving away from the starting position.
- Compared to other lines (like D or C), line A has a
moderate slope — not too steep, not too shallow — so it’s likely
slower steady speed than some others.
✔ Correct Answer:
D. Slower steady speed; moving away from the starting position
*(Note: Option B says “Fast steady speed” — but since D is steeper, D is faster. So A is slower than D.)*
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✔ Final Answers:
1.
A
2.
C
3.
C
4.
D
Let me know if you’d like visual explanations or more detail on any of these!
Parent Tip: Review the logic above to help your child master the concept of interpreting graphs of functions worksheet.