Homework Help: Phy121 are these answers correct?

1. The problem statement, all variables and given/known data
I have a test in the morning. Here is a link to the website where a practice test is located. http://www.mc.maricopa.edu/~vantassell/PHY121/phy121.html [Broken]. It is on the left under sample test 1.

2. Relevant equations
The relevant equations are at the bottom of the test.


3. The attempt at a solution
Here are my answers:
1.D
2.C
3.D
4.A
5.B
6.D
7.D,A,C,F,B,E
8.E,D,C,A,B,F
9.Skip
10.Skip
Calculations
1. mag=sqrt(106.9) theta= 228 degrees
2.91.5 m/s
3. 29m/s
4.a.87.5m b.32.5s
5. no
6.a 285m b.236.4m c. 9.5 m/s d.-7.9m/s


I rounded a lot of the answers. If someone has time, could you see if my answers are correct? Thanks

-Mark
1. The problem statement, all variables and given/known data



2. Relevant equations



3. The attempt at a solution

 

If no one has time for the entire practice exam, maybe someone could check the first 8 multiple choice conceptual questions? That would help a lot.