Answers to even numbered homework:

 

NOTE:  These are based on my own quick calculations, not from a reviewed answer key.  Errors are possible.  Send an email if you really think the answer is something else and I’ll double check.

 

Serway And Faughn 7th Ed:

 

Ch 5:

 

2          30.6 m

4          1,590 J

10        160.4 m/s

18        2.04 m

26        5.05 m

28a      9.9 m/s

28b      7.67 m/s

42a      2.3 m/s

42b      16.1 J

48a      20,580  J

48b      686 Watts

54a      5,920 W

54b      11,150 W