Reaction Time (GCSE Physics)

A novice driver has an average reaction time of 0.6 s and an experienced driver 0.45 s. What percent faster (shorter) is the experienced driver’s reaction time compared to the novice?

What unit is typically used to report human reaction time in experiments?

Which behaviour will most likely increase reaction time in an emergency driving situation?

Which change would be expected to reduce variability (spread) in repeated reaction-time measurements for a single subject?

Which of the following best represents a typical minimum simple reaction time to a sound for a young, alert person?

If a driver’s speed is 72 km/h and their reaction time is 0.75 s, what is their thinking distance? (72 km/h = 20 m/s)

In an experiment a subject’s reaction time is measured five times and values vary slightly. What is the main benefit of repeating the measurement several times?

Which lifestyle change is most likely to improve someone’s reaction time over weeks?

Which physiological factor most directly determines how quickly sensory information is converted into a motor response during a simple reaction-time task?

A subject’s measured reaction times (s) to a light are 0.21, 0.24, 0.20, 0.23, 0.22. What is the mean reaction time?

A sports coach wants to test athletes’ reaction time to sound. Which change would make the test measure auditory reaction time rather than visual?