Year 9 Science · Unit 4 · Lesson 13

Distance-Time Graphs

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Learning Goals

Warm Up

Describe the motion — one sentence per segment

Study the distance-time graph below. Write one sentence describing the motion in each labelled segment. Include the speed if you can calculate it (speed = rise ÷ run).

Time (s) Distance (m) 0 10 15 25 35 40 0 50 100 150 1 2 3 4 5
SegmentDescribe the motion (include speed if possible)
1
2
3
4
5

Your Turn

Gradient calculation — use the graph above

Use the formula: speed = rise ÷ run = change in distance ÷ change in time. Show your working for each calculation.

(a) Calculate the speed during Segment 1 (0 to 10 s). Working: rise = ___ m, run = ___ s, speed = ___

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(b) Calculate the speed during Segment 3 (15 to 25 s). Working: rise = ___ m, run = ___ s, speed = ___

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(c) Compare your answers from (a) and (b). Which segment shows faster motion? How can you tell from the graph without calculating?

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(d) Describe what the graph looks like during Segment 4 when the object returns to the start. Why does the line go downward?

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Wrap Up

In one sentence, what was the main idea of this lesson?

HSCScience · Year 9 Science · Unit 4 · Lesson 13 · Apply Worksheet