A firework explodes into three pieces as shown in the diagram below. Now that you have set up the equation for the x and y components of the final momentum of the firework, let's do some physics! Given: ∙ The initial firework had a mass of 9.0 kg and was launched at vi = 50 m/s vertically straight up. ∙ The firework explodes into three pieces of equal mass 3.0 kg . The angles θ1 = θ3 = 20 ∘ . ∙ Speed v1 = 100 m/s . What is the speed v2 ?