Peoples Physics Book Version-2

http://www.ck12.org Chapter 29. Answers to Selected Problems Version 2

3. 5,625 J

4. 21.2 m/s


5. 9.18 m
   3..


6. (b)KE= 504 ,600 J;Ug= 1 , 058 ,400 J;Etotal= 1 , 563 ,000 J


7. 34 m/s at B; 28 m/s at D,40 m/s at E,49 m/s at C and F; 0 m/s at H


8. 96 m


9. 1.7 J


10. 1.3 m/s


11. 0.4 J, 0 .63 m/s


12. 1.2 m/s^2


13. 130 J


14. 6750 J


15. 
    
    
    
    2. 25 × 105 J
    
    
    
    


16. 
    
    
    
    1. 5 × 105 J/gallon of gas
    
    
    
    


17. 0.76 m

Ch 3: One-Dimensional Motion

1..
2..
3..
4..

1. Zyan


2. Ashaan is accelerating because the distance he travels every 0.1 seconds is increasing, so the speed must
   be increasing


3. Ashaan


4. Zyan


5. Ashaan
   5..
   6..


6. 6 minutes


7. (d) 20 meters (e) 40 meters (f) 2.67 m/s (g) 6 m/s (h) Betweent=15 s andt=20 sec because your position
   goes fromx=30 m tox=20m. (i) You made some sort of turn
   
   
   1. 7.7 m/s^2
   
   
   2. 47 m,150 feet
   
   
   3. 34 m/s
   
   
   4. 1.22 m
   
   
   5. 4.9 m/s
   
   
   6. 2.46 m/s
      4.− 4 .9 m/s
   
   
   
   


8. (b) 1 second (c) at 2 seconds (d) 4m
   
   
   1. 250 m
   
   
   2. 13 m/s,−13 m/s