Question

A student runs 100 meters in 11 seconds. What is the speed of the student? Speed= distance/time; 1 mile=1609

1. 9.1 miles per hour
2. 16 miles per hour
3. 20.3 miles per hour
4. 24 miles per hour

Answer 1

Speed=distance/time

100/11=9.1 m/s

1. 9.1 miles per hour

9.1 miles=14641.9 meters

1 hour= 60s

14641.9/60= 244.0 m/s

2. 16 miles per hour

16 miles= 25744 meters

25744/60= 429.1 m/s

3. 20.3 miles per hour

20.3 miles= 32662.7 meters

32662.7/60= 544.4 m/s

4. 24 miles per hour

24 miles= 38616 meters

38616/60= 643.6 m/s

* Note: Answers were rounded to the nearest tenth.