Reaction Time (GCSE Physics)

Which device is most commonly used to record the time a subject takes to react in a timed reaction-time test?

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?

Why does alcohol generally increase (worsen) reaction time?

Which factor would NOT normally increase a person’s reaction time (make it slower)?

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 snowboarder practices reacting faster to a gate. Which training will most likely reduce their reaction time?

A traffic safety campaign states: “Cut your reaction time and you reduce stopping distance.” Which part of stopping distance is directly reduced by a shorter reaction time?

A student drops a ruler and another student catches it; the distance the ruler falls before being caught is used to estimate reaction time. Which physical quantity is directly calculated from that falling distance for the estimate?

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

If a driver’s reaction time is 0.6 s and the car speed is 20 m/s, what is the thinking distance (distance travelled during reaction)?

Which emergency safety recommendation is directly aimed at reducing drivers’ reaction times?