Final answer:
Sarah's speed is 120 miles per hour.
Step-by-step explanation:
Speed is defined as the distance traveled divided by the time taken. In this case, Sarah drove 10 miles in 5 minutes. To find her speed, we can use the formula:
Speed = Distance / Time
Substituting the given values, we have:
Speed = 10 miles / 5 minutes
Since the unit of speed is typically miles per hour (mph), we need to convert the time to hours by dividing it by 60 (1 hour equals 60 minutes).
Speed = 10 miles / (5 minutes / 60 minutes per hour) = 10 miles / (1/12 hours) = 120 miles per hour
Therefore, Sarah's speed is 120 miles per hour.