What is launch angle

Question

A marker shell is fired at a ground level target 500 m distance with an initial velocity of 60 m/s what is the launch angle? 

Answer 1

Use the range equation for a projectile.

 

R = v_o² sin(2θ) / g ⇒ 

 

sin(2θ) = gR/v₀²

 

2θ = arcsin(gR/v₀²)

 

θ = (1/2) arcsin(gR/v₀²)

 

You were given R and v₀, and you know g.  Just plug in the numbers and finish from here.