Question
A swimmer swam the 50-meter freestyle in a time of 21 seconds. What was his speed to the nearest tenth of a meter per second?
0.4 meters per second
2.4 meters per second
23.8 meters per second
29.0 meters per second
0.4 meters per second
2.4 meters per second
23.8 meters per second
29.0 meters per second
Answers
GPT-4o mini
To calculate the speed of the swimmer, we can use the formula for speed:
\[
\text{Speed} = \frac{\text{Distance}}{\text{Time}}
\]
In this case, the distance is 50 meters and the time is 21 seconds. Plugging in these values:
\[
\text{Speed} = \frac{50 \text{ meters}}{21 \text{ seconds}} \approx 2.38095 \text{ meters per second}
\]
Rounding this to the nearest tenth:
\[
\text{Speed} \approx 2.4 \text{ meters per second}
\]
Therefore, the swimmer's speed is **2.4 meters per second**.
\[
\text{Speed} = \frac{\text{Distance}}{\text{Time}}
\]
In this case, the distance is 50 meters and the time is 21 seconds. Plugging in these values:
\[
\text{Speed} = \frac{50 \text{ meters}}{21 \text{ seconds}} \approx 2.38095 \text{ meters per second}
\]
Rounding this to the nearest tenth:
\[
\text{Speed} \approx 2.4 \text{ meters per second}
\]
Therefore, the swimmer's speed is **2.4 meters per second**.