Question

Physics Kinematics question

Answer 1

vertical: 
hf=hi+vi*sin53*20-4.9*20^2 
hf=0 hi=800 

max height: 
mgh=1/2 m (vi*sin53)^2 
solve for h, then add initial 800m altitude. 

solve for vi 
Horizontal: 
horiz distance=vi*cos53*20 
 
Velocity at impact 
1/2 m vi^2+mg*800=1/2 m vf^2 
solve for vf