ANSWERS 



[In every case TT has been taken as equal to 



CHAPTER III. 



23 -04 ft. per sec. 

 180 ft. per sec. 

 49 ft. per sec. per sec. 

 20 kilom. per hour. 

 40-5 ft. 



5^i ft. per sec. per sec. 

 18-25 ... ft. per sec. 

 900ft. ; 11 sees. 

 3 ft. per sec. per sec ; 6 sees. 

 36-33 . . . sees. 

 | mile, 

 hr. ; 20 miles, 15 miles. 



22. 6 sees. 



CHAPTER IV. 



10. 1612 cub. cm., 1'612 litres, 1612 grams. 



11. 1712 cub. cm., Mass of 1 c. c. in grams = 25 .^-= 1C -6. 



loOO 



3. 



4. 



8. 

 13. 

 14: 

 15. 

 16. 



7 : 8 ; 7 : 8. 



33 : 20. 



2:7. 



720 ft. 



64 ft. per sec. 



225ft. 



144 ft. 



CHAPTER V, 



17. (a) 32. ft. per sec., (b) 64 ft. per sec., (c) 96 ft. per sec. 



18. 3 sees ; 96 ft. per sec. 

 21. 156 Ibs. wt. 



