Question

Tyson Gay's best time to run 100.0 meters was 9.69 seconds. What was his average speed during this run, in miles per hour? (3.281ft=1 m)(1 mile=5280 ft)

Report your answer to three significant figures.

Answer 1

Tyson Gay's average speed during his 100.0 meters run was 23.1 mph, after converting the distance to miles and the time to hours.

Step-by-step explanation:

To find Tyson Gay's average speed during his 100.0 meters run in miles per hour (mph), we need to convert 100 meters to miles and 9.69 seconds to hours. First, we convert the distance:

• 100 meters × (1 mile / 5280 feet) × (3.281 feet / 1 meter) = 0.0621371 miles

Now, we convert the time:

• 9.69 seconds × (1 hour / 3600 seconds) = 0.0026917 hours

To find speed in mph, we divide the distance in miles by the time in hours:

• Speed = 0.0621371 miles / 0.0026917 hours = 23.1 mph

Therefore, Tyson Gay's average speed was 23.1 mph (rounded to three significant figures).