







Projectile Motion

* g = 10 N /kg









Horizontal Motion 
Vertical Motion 
Initial Velocity 
u_{x} = ucosθ 
u_{y} = usinθ 
Acceleration 
a_{x} = 0 
a_{y} = g 
Velocity 
v_{x} = ucosθ 
v_{y} = usinθ  gt 
Position 
x = (ucosθ)t 
y = h + (usinθ)t  gt^{2}/2 
where g = 9.8 kg^{2} 

 Horizontal motion : uniform morion (constnat velocity)
 Vertical motion: uniformly accelerated motion
 When reaching the highest point, v_{y} = 0
 Maximum Height
 When falling back to the ground, y = 0
 Time of flight
 Range R = (ucosθ)T
 Range is maximum when
 In particular, when h = 0, θ_{max R } = 45 ^{o}





