A barrel floats down a river past two flags that are 100 meters apart. The time it took for the barrel to pass each flag is shown. What is the speed of the stream's current?

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Answer :

anuradhaborua anuradhaborua · Answer 1 · 2024-01-07T20:31:32-05:00

The speed of barrel is 3.6 m/s when moving from one flag to another. Hence, option D is correct.

Here's a step-by-step calculation:

1. Given values:

- Distance between two flags = 100 meters

- Time taken by the barrel from one flag to another = 28 seconds (obtained by subtracting 2:43 from 2:15)

2. Formula for speed:

[tex]\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \][/tex]

3. Substitute the given values into the formula:

[tex]\[ \text{Speed} = \frac{100 \, \text{meters}}{28 \, \text{seconds}} \][/tex]

4. Simplify the expression:

[tex]\[ \text{Speed} \approx 3.6 \, \text{m/s} \][/tex]

5. Conclusion:

The speed of the barrel when moving from one flag to another is found to be 3.6 meters per second.