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PRACTICAL MATHEMATICS 



The highest point is reached after 9-315 sees, and the full time 

 of flight is 18-63 sees. 



(4) Taking an initial vertical velocity of 400 ft. per sec. 



Then 



y = 4002 - -gt* 



= 2(400 - 16-12) 



The highest point is reached after 12-42 sees, and the full time 

 of flight is 24-84 sees. 



(5) Taking an initial vertical velocity of 500 ft. per sec. 

 Then y = 5002 - ^2 2 



= 2(500 - 16-12) 





