A car finishes the skidpad event with an average laptime of 5,0 seconds. The static friction coefficient of the ground and the tire is 0,9. What was the aerodynamic downforce to weight ratio during the run? Assume, that the car is travelling on the centerline of the track. G=9,81 m/s²

1. 0.45
2. 0.9
3. 0.5
4. 1.37