Stopping Distances (AQA GCSE Physics Combined Science): 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 does thinking distance change as speed increases?

At same rate as speed

Why does thinking distance increase at higher speeds?

More distance during reaction time

What happens to reaction time as speed increases?

It doesn't really change

What happens to braking distance as the vehicle speeds up?

It increases

Why does braking distance increase with speed?

More kinetic energy

According to KE=12mv2KE = \frac{1}{2}mv^2, how does kinetic energy change with speed?

At higher rate

What formula relates work done to braking distance with constant force?

W=FsW = Fs

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

More work to transfer KE

At 35mph, what is the Blue Vehicle's stopping distance on the graph?

23m

At 35mph, what is the Red Vehicle's stopping distance on the graph?

29m

Which vehicle had a shorter stopping distance at 35mph?

Blue Vehicle

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