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Do Now!. Last lesson. Speed investigation. Today’s lesson. Interpreting distance-time and speed-time graphs. Distance against time graphs. distance. time. No movement?. distance. time. No movement. distance. time. Constant speed?. distance. time. Constant speed. distance. time.

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Do now

Do Now!


Last lesson

Last lesson

Speed investigation


Today s lesson

Today’s lesson

  • Interpreting distance-time and speed-time graphs


Distance against time graphs

Distance against time graphs

distance

time


No movement

No movement?

distance

time


No movement1

No movement

distance

time


Constant speed

Constant speed?

distance

time


Constant speed1

Constant speed

distance

time


Constant speed2

Constant speed

distance

The gradient of this graph gives the speed

time


Constant speed3

Constant speed

How would the graph look different for a faster constant speed?

distance

time


Constant speed4

Constant speed

fast

distance

time


Constant speed5

Constant speed

fast

How would the graph look different for a slower constant speed?

distance

time


Constant speed6

Constant speed

fast

distance

slow

time


Getting faster accelerating

Getting faster? (accelerating)

distance

time


Getting faster

Getting faster

distance

time


Examples

Examples

distance

time


A car accelerating from stop and then hitting a wall

A car accelerating from stop and then hitting a wall

distance

time


A car accelerating from stop and then hitting a wall1

A car accelerating from stop and then hitting a wall

distance

time


Speed against time graphs

Speed against time graphs

speed

time


No movement2

No movement?

speed

time


No movement3

No movement

speed

time


Constant speed7

Constant speed?

speed

time


Constant speed8

Constant speed

speed

time


Constant speed9

Constant speed

How would the graph look different for a faster constant speed?

speed

time


Constant speed10

Constant speed

speed

fast

time


Constant speed11

Constant speed

How would the graph look different for a slower constant speed?

speed

fast

time


Constant speed12

Constant speed

speed

fast

slow

time


Getting faster accelerating1

Getting faster? (accelerating)

speed

time


Getting faster accelerating2

Getting faster? (accelerating)

speed

Constant acceleration

time


Getting faster accelerating3

Getting faster? (accelerating)

speed

The area under the graph gives the distance travelled

time


Example

Example:

speed

time


A dog falling from a tall building no air resistance

A dog falling from a tall building (no air resistance)

speed

time


A dog falling from a tall building no air resistance1

A dog falling from a tall building (no air resistance)

speed

time


A dog falling from a tall building no air resistance2

A dog falling from a tall building (no air resistance)

speed

Area = height of building

time


Be careful

distance

speed

time

time

Be careful!


No movement4

distance

speed

time

time

No movement


Constant speed13

distance

speed

time

time

Constant speed

Area = distance travelled


Constant acceleration

distance

speed

time

time

Constant acceleration

Area = distance travelled


Questions

Questions!


Balls

Balls!


Investigating rolling balls

Investigating rolling balls!

  • Prediction

  • Table of results (Mass, circumference or diameter, Distance, time (measured several times), speed)

  • Suitable graph

  • Conclusion

  • Evaluation


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