Factors Affecting Thinking Distance & Reaction Time (OCR GCSE Physics A (Gateway Science Suite)): Quizzes

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Factors Affecting Thinking Distance & Reaction Time
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What generally happens to stopping distance as vehicle speed increases?

It increases

How do thinking distance and braking distance increase as speed increases?

At different rates

How does thinking distance change as vehicle speed increases?

It increases at the same rate

What happens to your reaction time as vehicle speed increases?

It doesn't really change

Why does thinking distance increase at higher speeds?

More distance travelled during reaction time

Why does braking distance increase as speed increases?

More kinetic energy to transfer

Which formula shows why braking distance increases with speed?

KE=12mv2KE = \frac{1}{2}mv^2

How does kinetic energy increase compared to speed?

At a higher rate

Why is more distance needed for braking at higher speeds if braking force is constant?

More work needed (W=FsW = Fs)

What can stopping distance vs speed graphs be used for?

Comparing different vehicles

At 35mph, which vehicle had the shorter stopping distance in the graph example?

Blue vehicle (23m)

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