One simple method involves dropping a ruler between someone's open thumb and forefinger. The higher the reaction time needed to grasp the falling ruler, the further the ruler falls before being ...

{reaction~time~(s)}\) Describe the effect of increasing ... in this practical activity to use appropriate apparatus and methods. This includes the safe use and careful handling of substances.

Methods: ASTM standard compression testing of seven softball ... Over 500 bat/ball impact measurements were recorded and analysed. Available pitcher reaction time was calculated from the mean batted ...