1. The problem statement, all variables and given/known data You kick a ball at 20m/s at 40* from the horizontal, at the very top it hits a bird, stops immediately and fall straight down. vi=20m/s θ=40° I need to calculate the velocity right before impact the max height (height of collision) speed of ball when right before it hits the ground 2. Relevant equations i need to relate the velocity at 2 different points and time is unknown so i should use Conservation of energy Ef-Ei=Ein-Eout 3. The attempt at a solution Im not sure what i want to set as my initial and final points, im thinking Ei=1/2mvi^2 Ef=1/2mvf^2 + mgh in and out=0 just want to know if i have this setup properly, I dont have the answers anywhere and they are not written down anywhere. from the energy equation m will cancel out and i will be able to solve for the final velocity in terms of initial velocity and height, then im pretty sure i need to add a second approach to get the height.