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The FrictionThe FrictionChallengeChallenge

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The backgroundThe background

You have got a job working for the toyYou have got a job working for the toy

manufacturers Hot Wheelsmanufacturers Hot Wheels

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You are workingYou are working

on a new loop theon a new loop the

loop ramp for theloop ramp for the

cars.cars.

But there is aBut there is a

problem…..problem…..

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The cars areThe cars arebeing releasedbeing releasedfrom the top butfrom the top butfriction isfriction isstopping themstopping themfrom getting thefrom getting thewhole way to thewhole way to thefinish.finish.

The children areThe children are!T happy""!T happy""

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Your challenge is toYour challenge is todesign andesign aninvestigation. Youinvestigation. Youmust be able tomust be able torecommend arecommend amaterial which ismaterial which isbest for the orangebest for the orange

part of the track andpart of the track andanother material thatanother material thatwould be suitable forwould be suitable forthe grey part of thethe grey part of the

track. Your decisiontrack. Your decisionmust be backed upmust be backed upby your research.by your research.

Thi k b

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Think aboutThink about

#$%&T%!.#$%&T%!.

What does theWhat does the

friction need tofriction need to

be like on thebe like on the

orange part oforange part of

the track'the track'

How will this beHow will this be

different to thedifferent to thefriction neededfriction needed

on the grey parton the grey part

of the track'of the track'

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You will be givenYou will be given

 ( toy car  ( toy car 

 ( ramp ( ramp

) *ifferent materials) *ifferent materials

 ( metre ruler  ( metre ruler   ( pencil and paper  ( pencil and paper 

How will you come to your decision'How will you come to your decision'

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You have + minutes to plan yourYou have + minutes to plan your

investigation.investigation.

You will then have to give each person inYou will then have to give each person in

the group a role.the group a role.

This must be aThis must be a

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#riction &hallenge , -ey uestions#riction &hallenge , -ey uestions

What are you trying to measure in thisWhat are you trying to measure in this

challenge'challenge'

How can you use the cars and the materialsHow can you use the cars and the materialsto test friction'to test friction'

How will you know if there is more or lessHow will you know if there is more or less

friction'friction'