Question

"One lap around the Indianapolis Speedway is 2.5 miles. A good driver can complete a lap in 40 seconds. How many miles per hour are the cars traveling?"

A) 90 mph
B) 120 mph
C) 150 mph
D) 180 mph

Answer 1

The cars are traveling at approximately 225.80 mph.

Step-by-step explanation:

To find the speed in miles per hour, we need to convert the given distance and time units to the appropriate units.

First, we convert 2.5 miles to kilometers by multiplying it by 1.609. This gives us 4.0235 kilometers.

Next, we convert 40 seconds to hours by dividing it by 3600. This gives us 0.0111 hours.

Finally, we divide the distance in kilometers by the time in hours to find the speed in kilometers per hour, which is approximately 363.15 km/h.

To convert this to miles per hour, we multiply the speed in km/h by 0.62137. This gives us approximately 225.80 mph.

Therefore, the cars are traveling at approximately 225.80 mph.