What is the speed of... (all answers need to be in meters/sec) 16. A skateboarder rolling 15m in 3 sec
17. A car traveling 100km in 1hr
18. A swimmer going 2000m in 9:12
19. A biker covering 100km in 45min
20. A runner doing a 5k in 20:36

Speed=distance/time

Explanation:

Speed=distance/time

16)

15/3 meters per second

5 meters per second

17)

100 kilometers=100,000 meters

1 hour=3,600 seconds

100,000/3,600=27.7777 (7 repeating)

About 27.78 meters per second

18)

9 minutes=540 seconds

540+12=552 seconds

2,000/552≈3.62 meters per second

19)

100 kilometers=100,000 meters

45 minutes=2,700 seconds

100,000/2,700=37.037037037 (037 repeating)

About 37.04 meters per second

20)

5k=5,000 meters

20 minutes=1,200 seconds

1,200+36=1,236 seconds

5,000/1,236≈4.05 meters per second

the independent variable, or the one that is intentionally manipulated is the speed.