# SC 130 Physical Science Quiz Two • Name:

1. ___________________ On Wednesday evening 23 January 2008, I ran 6.55 kilometers in 40 minutes 18 seconds. What was my speed in meters per second?

Time (s)avg A ball dist (m)avg B ball dist (m)
00.00 0.00
14.71 3.31
27.97 5.70
310.797.78
412.929.61
515.0711.22
617.9113.50
slope (m/s):3.162.35
1. ___________________ Does the above data confirm a hypothesis that time and distance are linearily related for a ball rolling on a level surface?
2. Why does the above data confirm or disconfirm a hypothesis that time and distance are linearily related for a ball rolling on a level surface?
3. ___________________ According the above data, which ball is faster, the A or the B ball?
4. ___________________ What is the speed of the A ball in meters per second?
5. ___________________ Using the above data, predict the distance the A ball would roll after 7 seconds.
6. ___________________ Using the above data, predict the time it would take the A ball to roll 31.6 meters.
7. ___________________ Will the ball obey your predictions above?
8. Why, or why not, will the ball above obey your prediction? Use the back if you need more space.