Final answer:
To convert 50 miles per hour to feet per second, multiply by 5,280 to convert miles to feet, then divide by 3,600 to convert hours to seconds, resulting in 73.33 feet per second.
Step-by-step explanation:
To convert the car's speed from miles per hour to feet per second, we need to use unit conversion factors. There are 5,280 feet in a mile and 3,600 seconds in an hour.
First, we convert miles to feet: 50 mi/h × 5,280 ft/mi. This equals 264,000 ft/h.
Then, we convert hours to seconds: 264,000 ft/h ÷ 3,600 s/h. This equals 73.33 ft/s.
Therefore, the car's speed is 73.33 feet per second when traveling at 50 miles per hour.