- #1
HelpMeh
- 13
- 0
Homework Statement
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
Homework 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
The Attempt at a Solution
Im not sure what i want to set as my initial and final points, I am 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 don't 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 I am pretty sure i need to add a second approach to get the height.