Final answer:
The speed of a baseball thrown at 42.5 m/s is approximately 95.1 miles per hour after conversion, making choice B the correct answer.
Step-by-step explanation:
The student's question involves converting the speed of a baseball from meters per second (m/s) to miles per hour (mi/hr). To convert 42.5 m/s to mi/hr, we use the conversion factor that 1 mile per hour is equal to 0.44704 meters per second. The calculation is as follows:
Speed in mi/hr = (Speed in m/s) / (0.44704 m/s per mi/hr)
So, Speed in mi/hr = 42.5 m/s / 0.44704 m/s per mi/hr ≈ 95.1 mi/hr
Therefore, the speed of the baseball is approximately 95.1 miles per hour, which corresponds to answer B.