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**tigermadness** Problem requires the following to be answered: 1) Range, 2) total flight time and 3) max altitude. I need someone to review my range answer and my total flight time answer. In addition, I need some help setting up my max altitude.

The equation is (vcosθ)t**i **+[(vsinθ)t -1/2 gt^2]**j**

To get range, I set y=0 and solved for t.

y= (vsinθ)t -1/2 gt^2

0= (vsinθ)t -1/2 gt^2

1/2 gt^2 = (vsinθ)t

gt^2= 2(vsinθ)t

gt= 2(vsinθ)

t= 2(vsinθ)/g TOTAL FLIGHT TIME

Inserted t into x= vcosθt

vcosθ * 2(vsinθ)/g

2 sinθcosθv^2/g

Sin2θv^2/g RANGE

Need help on setting up max altitude