Speed-time graphs

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Rachel Staddon

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Rachel Staddon 8 years, 1 month ago

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Rachel Staddon 8 years, 1 month ago

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Question statement

The distance-time graph below shows a journey.

{image('resources/question-resources/Speed-time_graph.png')}

A = $\var{A}$

B = $\var{B}$

C = $\var{C}$

D = $\var{D}$

F = $\var{F}$

Give any introductory information the student needs.

			Name	Type	Generated Value

A	integer	18
B	integer	36
C	integer	1
D	integer	14
F	integer	33
YZ	rational	18/19
DCdiff	integer	13
FDdiff	integer	19
dist	rational	243

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xxxxxxxxxx
 
random(10..35)

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Description

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Generated value: `integer`

→ Used by:

YZ
dist

Statement
"Part c)" - Minimum accepted value
"Part c)" - Maximum accepted value

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The traveller is staying still

Marks: Distractor Message:
The traveller is going at a constant speed

Marks: Distractor Message:
The traveller is accelerating

Marks: Distractor Message:
The traveller is decelerating

Marks: Distractor Message:

Advice

Horizontal lines on speed-time graphs are when the subject is travelling at a constant speed. Lines with a positive gradient are accelerating (speeding up), and lines with a negative gradient are decelerating (slowing down).

You calculate the acceleration of a section of a speed-time graph by finding the gradient of that section. Remember gradient = difference in y / difference in x. This is the same as saying acceleration = change in speed / time.

You can work out missing values by rearranging theacceleration = change in speed / time equation.

The area under a speed-time graph is the distance travelled.

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Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Rachel Staddon 8 years, 1 month ago

Rachel Staddon 8 years, 1 month ago

Error in variable testing condition

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Generated value: `integer`

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Speed-time graphs

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Rachel Staddon 8 years, 1 month ago

Rachel Staddon 8 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Choose one from a list

Advanced settings

Generated value: `integer`