Video: Top Gear

http://www.bbc.co.uk/learningzone/clips/the-100-car-challenge/8109.html

Does speed matter?http://www.youtube.com/watch?v=Ctkqd6hYMy8

Keywords: Thinking Distance, Stopping Distance, Braking Distance. Keywords: Thinking Distance, Stopping Distance, Braking Distance.

What affects the time it takes you to stop?

Keywords: Thinking Distance, Stopping Distance, Braking Distance. Keywords: Thinking Distance, Stopping Distance, Braking Distance.

What is involved with braking?

1. Spot the hazard. 2. Thinking Distance – the time taken

between seeing the hazard and hitting the brakes.

3. Braking Distance – the time taken between applying the brakes and the car stopping.

Keywords: Thinking Distance, Stopping Distance, Braking Distance. Keywords: Thinking Distance, Stopping Distance, Braking Distance.

Thinking DistanceThis can be affected by:

1. How fast you are going – the faster you are travelling, the further you will travel.

2. How dopey you are – this can be as a result of being tired, under the influence of drugs, old age and/or careless attitude.

Keywords: Thinking Distance, Stopping Distance, Braking Distance. Keywords: Thinking Distance, Stopping Distance, Braking Distance.

Braking DistanceThis can be affected by:

1. How fast you are travelling – the faster you travel, the further it takes to stop.

2. How heavily loaded you are – with the same brakes a heavily laden vehicle takes longer to stop.

3. How good your brakes are – you must keep them well maintained.

4. How good the grip is – this depends on the road surface, weather conditions and tyres.

Keywords: Thinking Distance, Stopping Distance, Braking Distance. Keywords: Thinking Distance, Stopping Distance, Braking Distance.

Other factorsDon’t forget that you stopping distance can also be affected

by:

• Bad visibility – fog, bright oncoming lights, heavy rain, snow etc.

• Distractions from passengers, mobile phones, music, etc.

Keywords: Thinking Distance, Stopping Distance, Braking Distance. Keywords: Thinking Distance, Stopping Distance, Braking Distance.

Stopping Distances – the combined thinking and braking distance.

Keywords: Thinking Distance, Stopping Distance, Braking Distance. Keywords: Thinking Distance, Stopping Distance, Braking Distance.

Speed (mph) Thinking Distance (m)

Braking Distance (m)

Stopping Distance (m)

20 6 6 12

30 9 14 23

40 12 24 36

50 15 38 53

60 18 55 73

70 21 75 96

Stopping a car.Stopping a car.

Braking distance

Thinking distance

Too many drugs

Tiredness

Icy roads

Tyres/brakes worn outWet roads Poor visibility

Driving too fastToo much alcohol

Which of phrases below affect ‘Thinking distance’, and which affect ‘Braking’ distance’? Match them up.

Stopping a car.Stopping a car.

Braking distance

Thinking distance

Too many drugs

Tiredness

Icy roadsTyres/brakes worn out

Wet roads Poor visibility

Driving too fast

Too much alcohol

Which of phrases below affect ‘Thinking distance’, and which affect ‘Braking’ distance’? Match them up.

Where else can this be used:

http://www.bbc.co.uk/learningzone/clips/use-of-mathematics-when-shooting-a-car-crash-stunt/6191.html

Test ReactionsUse a stopwatch to start and stop you stopwatch as soon as

possible. Record you times.

Repeat trying to get your stop watch to stop on 1 minute, then 2 and 3 minutes.

Think about:

• How can you make your data as reliable as possible• What conclusions can you draw?

Keywords: Thinking Distance, Stopping Distance, Braking Distance. Keywords: Thinking Distance, Stopping Distance, Braking Distance.

Are you now able to….

I still feel unsure. I need some more help to understand.

I feel ok. I need to do some more work to check my understanding.

I am happy and feel I understand and can explain the main points.

Keywords: Thinking Distance, Stopping Distance, Braking Distance. Keywords: Thinking Distance, Stopping Distance, Braking Distance.