Question

Consider a 2130 lb automobile clocked by law-enforcement radar at a speed of 85.5 mph. What is the speed of the automobile in meters per second?

1) 38.2 m/s
2) 38.4 m/s
3) 38.6 m/s
4) 38.8 m/s

Answer 1

To convert the speed of the 2130 lb automobile from mph to m/s, divide the speed in mph by 2.237.

Step-by-step explanation:

To convert the speed of the automobile from miles per hour (mph) to meters per second (m/s), we can use the fact that 1 mile is equal to 1609.34 meters and 1 hour is equal to 3600 seconds.

So, to convert from mph to m/s, we divide the speed in mph by 2.237 to get the speed in m/s.

In this case, the speed of the automobile in m/s is:

85.5 mph / 2.237 = 38.24 m/s (approximately)

Therefore, the correct answer is option 2) 38.4 m/s.