To find out who was the better pitcher based on average speed, we need to calculate the average time for both pitchers and then determine their speeds.
Step 1: Calculate the average time for each pitcher.
Lou's times:
- 1.2 s
- 2.0 s
- 3.1 s
- 2.5 s
Average time for Lou: \[ \text{Average time}_{\text{Lou}} = \frac{1.2 + 2.0 + 3.1 + 2.5}{4} = \frac{8.8}{4} = 2.2 \text{ s} \]
Jamie’s times:
- 1.7 s
- 2.3 s
- 3.0 s
- 2.2 s
Average time for Jamie: \[ \text{Average time}_{\text{Jamie}} = \frac{1.7 + 2.3 + 3.0 + 2.2}{4} = \frac{9.2}{4} = 2.3 \text{ s} \]
Step 2: Calculate the average speed for each pitcher.
Average speed is calculated using the formula: \[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \] For our case, the distance from the pitcher’s mound to home plate is 15 m.
Speed for Lou: \[ \text{Speed}_{\text{Lou}} = \frac{15 \text{ m}}{2.2 \text{ s}} \approx 6.82 \text{ m/s} \]
Speed for Jamie: \[ \text{Speed}_{\text{Jamie}} = \frac{15 \text{ m}}{2.3 \text{ s}} \approx 6.52 \text{ m/s} \]
Conclusion:
- Lou's average speed: approximately 6.82 m/s
- Jamie's average speed: approximately 6.52 m/s
Answer: Lou was the better pitcher, with an average speed of approximately 6.82 m/s. (Note that none of the provided responses match this, indicating possible confusion or error in problem context wording about speed.)