This problem offers you two ways to test reactions - use them to
investigate your ideas about speeds of reaction.
Invent a scoring system for a 'guess the weight' competition.
How can people be divided into groups fairly for events in the Paralympics, for school sports days, or for subject sets?
95% of people in Britain should live within 10 miles of the route of the Olympic Torch tour. Is this true?
Does weight confer an advantage to shot putters?