Assumptions, any creative people to me?

three turtles are running a relay race. we are only recording their displacement. what might happen that would cause turtles not to be able to run 15 meters in 9 minutes?

assume and give strengths and weakness. : )

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters