1c 2a 3d 4b 5d 6b 7c 8d 9d 10a

11a)  17.6 m/s2 b) 2.64 N c) 0.514 m/s

12a) -600 J b) -49 J c) -649 J

13a) frictional force that would be required to hold it at rest would be 4.26 N. That is greater than the maximum static frictional force of 2.83 N, so it does not stay at rest.  It slips. b) 2.07 m/s2

14a) 0.216 J and  1.69 J b) horiz: 1.2 m/s, vert: 3.13 m/s c) 0.0214 N

15a) 0.922 J b) 0.173