Reaction time (AQA GCSE Physics): Flashcards

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Reaction time
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Definition of reaction time

Gap between stimulus and response

Typical human reaction time range

0.2 to 0.9 seconds

Fastest possible human reaction time

0.2 seconds

Four factors that slow reaction time

Tiredness, alcohol/drugs, distractions, age

Gravitational field strength on Earth (for calculations)

1010 N/kg

Formula for reaction time from ruler drop distance

2×dg\sqrt{\frac{2 \times d}{g}}

Formula for thinking distance

speed×reaction time\text{speed} \times \text{reaction time}

Thinking distance definition

Distance car travels while deciding what to do

Examples of people who train for faster reaction times

Athletes, racing drivers, fighter pilots

Effect of speed on thinking distance

Faster speed = longer thinking distance

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