The diagram shows a pendulum oscillating between P and Q. Which method is used to determine the average period of oscillation of the pendulum?
- AMeasure the time it takes to swing from P to Q.
- BMeasure the time it takes to swing from P to Q to P 10 times and divide that time by 10.
- CMeasure the time it takes to swing from P to Q to P 10 times and multiply that time by 10.
- DMeasure the time it takes to swing from Q to P.