THE MOTION OF A PROJECTILE 827 



(1) Taking an initial vertical velocity of 100 ft. per sec. 

 Then y = 1<XM - ig* 2 



31 



- <(100 - 16-lt) 



The highest point is reached after 8-106 sees, and the full time 

 of flight is 6-212 sees. 



(2) Taking an initial vertical velocity of 200 ft. per sec. 



1 



Then y = 200J -gt 2 



2 



= <(200 - 16-1*) 



The highest point is reached after 6-212 sees, and the full time 

 of flight is 12-42 sees. 



(8) Taking an initial vertical velocity of 800 ft. per sec. 



1 2 

 2 



= <(300 - 16-lt) 



Then 



