What is the shortest possible time that has elapsed between starting and stopping the stop-clock?
The shortest possible time that has elapsed between starting and stopping the stop-clock is 01:20 (1 minute 20 seconds). To calculate this, we need to subtract the starting time from the stopping time.
Calculation:
Step 1: The stop-clock reads 00:50 when it is started (i.e. 00 minutes 50 seconds).
Step 2: It reads 02:10 when it is stopped.
Step 3: Subtract the starting time from the stopping time to get the time used:
02:10 - 00:50 = 01:20
Therefore, the shortest possible time elapsed between starting and stopping the stop-clock is 01:20 (1 minute 20 seconds). This calculation is important in various situations where accurate time measurements are essential, such as in sports, scientific experiments, and daily activities where time management is crucial.