Linear Accelerator

Aim
To move at a constant acceleration.
Materials
1 stopwatch
Method
Use any method.
Conditions
After a thinking & practice period of ten minutes, each team member, in turn, must move along the track at a constant acceleration so as to travel 16 meters in 8 seconds (acceleration of 0.5 ms-2).
Time Limit
this is the time limit
Ranking
The ranking order will be determined by the accuracy of the motions of the team members.