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?

linear regression ball roll

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.

    9. Physci spring 2008 • Physci • Courses • COMFSM