Reaction times

• Aim ; observe the effect of different factors on reaction time
• step 1 :

  hold ruler between persons thumb and index finger, lined up with the 0cm mark.
• step 2:

  drop without warning and record distance dropped before it was caught
• step 3:

  calculate the reaction time using newtons equation of motion: t= sqr(2s/a)

  Where s= distance dropped in metres and a = 9.6ms^-2
• step 4 : carry out repeats but be aware that the person will likely improve over time
• step 5: introduce a variable such as : before and after a sugar drink (stimulant) or with/ without distractions (e.g music)