1. Solutions to the Unit 2 Review Worksheet
Review for Test

8. 1 2 3

9. 1-2
1-3
2-3 1 2 3

10. 1-2
1-3
2-3 1 2 3

11. 1-2
1-3
2-3 1 2 3

12. 19
v (m/s) 36 4 22
3 seconds to stop
Time (sec)

13. It’s simple physics, really
It’s simple physics, really. Taking into account the amount of drag force experienced by the car as it leaves the launching platform, and using a basic understanding of children’s toys, the color is most obviously BLACK and the details on the side doors and hood are YELLOW FLAMES with RED and ORANGE outlines. DUH!!!!
v (m/s)
3.8
0.2 ?
Time (sec)

14. This is a chase problem!!!
x2A = x2B
Use the chase equation:

15. This is another chase problem!!! x2W = x2T
Use the chase equation:
Graph it!
NO, SHE CANNOT CATCH THE TRAIN. THE PROBLEM HAS “NO SOLUTION”
(NO REAL ZEROS)

16. IF she did catch the train, what would that look like?
Solve for this time (maybe 30 seconds, for example)
IF she did catch the train, how would you find the distance that she travelled?
Plug the time that you found into either x2W = x2T 30 ? 30 ?

17. What would this kind of a problem look like?
Is it possible to have a problem where there are TWO (2) times, or two answers?
Solve for both times
What would this kind of a problem look like?
“A man throws a ball straight up at a speed of 30 ft/s. Find the times that the ball would be 10 feet above the ground.”
See next page if you want a solution.

18. “A man throws a ball straight up at a speed of 30 ft/s
“A man throws a ball straight up at a speed of 30 ft/s. Find the times that the ball would be 10 feet above the ground.”