# Statistics: Reading a Speed-Time Graph

Key stage:  KS 2

Curriculum topic:   Statistics

Curriculum subtopic:   Use Line Graphs

Difficulty level:

### QUESTION 1 of 10

The following speed-time graph shows the speeds of a cyclist on a journey lasting two hours.

Notice that.....

after 10 minutes the cyclist is riding at 30 km/h.

the cyclist is only stationery when the speed is 0 km/h.

Look at this speed-time graph showing a cyclist's journey.

How many minutes does it take for the cyclist to reach a speed of 35 km/h.

Look at this speed-time graph showing a cyclist's journey.

For how many minutes does the cyclist stay at a speed of 35 km/h.

Look at this speed-time graph showing a cyclist's journey.

The cyclist was stationary between 50 mins and 60 mins.  True or false?

True

False

Look at this speed-time graph showing a cyclist's journey.

The cyclist was stationary between 90 mins and 100 mins.  True or false?

True

False

Look at this speed-time graph showing a cyclist's journey.

For how many minutes does the cyclist stay at a speed of 40 km/h.

Look at this speed-time graph showing a cyclist's journey.

Was the cyclist slowing down or getting faster between 40 mins and 50 mins?

slowing down

getting faster

Look at this speed-time graph showing a cyclist's journey.

Was the cyclist slowing down, travelling at a constant speed or getting faster between 50 mins and 60 mins?

slowing down

riding at a constant speed

getting faster

Look at this speed-time graph showing a cyclist's journey.

Was the cyclist slowing down, travelling at a constant speed or getting faster between 70 mins and 80 mins?

slowing down

riding at a constant speed

getting faster

Look at this speed-time graph showing a cyclist's journey.

What is the cyclist's maximum speed in km/h?  (just write the number)

Look at this speed-time graph showing a cyclist's journey.

After the cyclist's first stop, how many minutes are spent reaching a speed of 25 km/h?

• Question 1

Look at this speed-time graph showing a cyclist's journey.

How many minutes does it take for the cyclist to reach a speed of 35 km/h.

20
EDDIE SAYS
Have a look at the y-axis, which is labeled speed in km/h. Locate the point on the graph that is 35. From here, look down towards the x-axis, which is labeled time (mins). 20 minutes is the correct answer! Well done!
• Question 2

Look at this speed-time graph showing a cyclist's journey.

For how many minutes does the cyclist stay at a speed of 35 km/h.

20
EDDIE SAYS
Have a look at the y-axis, which is labeled speed in km/h. Locate the three points on the graph that are 35km/h. For the x-axis, check how many minutes each column of the graph represents. The columns are 10 minutes each, so the answer is 20mins. Great work!
• Question 3

Look at this speed-time graph showing a cyclist's journey.

The cyclist was stationary between 50 mins and 60 mins.  True or false?

False
EDDIE SAYS
Locate the speed at which the cyclist was riding between 50 mins and 60 mins - it is 40km/h. Remember that in the introduction, stationary is when the speed is at 0km/h, so the answer is false. You're working so hard on this!
• Question 4

Look at this speed-time graph showing a cyclist's journey.

The cyclist was stationary between 90 mins and 100 mins.  True or false?

True
EDDIE SAYS
Locate the speed at which the cyclist was riding between 90 mins and 100 mins - it is 0km/h. Remember that in the introduction, stationary is when the speed is at 0km/h, so the answer is true. Well done!
• Question 5

Look at this speed-time graph showing a cyclist's journey.

For how many minutes does the cyclist stay at a speed of 40 km/h.

10
EDDIE SAYS
Locate the 40km/h points on the graph and then look down towards the x-axis for the time. The cyclist was riding at 40km/h between 50mins and 60mins, so the answer is 10mins. Great job!
• Question 6

Look at this speed-time graph showing a cyclist's journey.

Was the cyclist slowing down or getting faster between 40 mins and 50 mins?

getting faster
EDDIE SAYS
Look at the direction of the line between 40mins and 50mins. The line goes up, so the speed is getting faster.
• Question 7

Look at this speed-time graph showing a cyclist's journey.

Was the cyclist slowing down, travelling at a constant speed or getting faster between 50 mins and 60 mins?

riding at a constant speed
EDDIE SAYS
Between 50mins and 60mins, the line is steady and doesn't move up or down, so the cyclist was riding at a constant speed of 40km/h. Good work!
• Question 8

Look at this speed-time graph showing a cyclist's journey.

Was the cyclist slowing down, travelling at a constant speed or getting faster between 70 mins and 80 mins?

slowing down
EDDIE SAYS
Locate the line and points on the graph between 70mins and 80mins. The line moves down showing that the cyclist was slowing down at this time.
• Question 9

Look at this speed-time graph showing a cyclist's journey.

What is the cyclist's maximum speed in km/h?  (just write the number)

45
EDDIE SAYS
Maximum speed is the quickest the cyclist rode throughout the journey. Look at the y-axis for the speed and follow the line graph to the highest point, which is 45km/h.
• Question 10

Look at this speed-time graph showing a cyclist's journey.

After the cyclist's first stop, how many minutes are spent reaching a speed of 25 km/h?

5
EDDIE SAYS
Locate 25km/h on the y-axis and follow across the graph until you reach the points on the graph. Then look down along the x-axis for the time. It looks like the cyclist was going 25km/h from 105mins to 110mins, so the answer is 5mins. Excellent work on interpreting line graphs!
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