A stone is let go from rest and descends vertically to the ground. The time for it to reach the ground and the distance it moves are both measured. These readings are then used to find the acceleration of free fall. The percentage uncertainty in the measured time is $0.05\%$. The percentage uncertainty in the measured distance fallen is $0.6\%$. What is the percentage uncertainty in the calculated value of the acceleration of free fall?
- A0.5%
- B0.7%
- C1.1%
- D1.3%