alleryStart learning →A lesson begins at 11:00 in the morning and ends at 11:50 the same morning. What is the elapsed time?
A11 minutes
B60 minutes
C50 minutes
D110 minutes
Answer & Solution
Correct answer: C. 50 minutes
1. Elapsed time is found by noting the beginning and ending times and subtracting.
2. Substitute the readings: 11:50 minus 11:00 gives 50 minutes.
3. On a stopwatch the start would read zero and the finish would read 50 minutes.
4. Adding the two clock readings has no meaning and produces the largest option.
_Source: OpenStax College Physics (CC BY 4.0), Ch 2 "Kinematics", section 2.3 Time, Velocity, and Speed_
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