Total Energy:
An object’s kinetic and potential energy added to each other AKA E = Ekin + Epot

Kinetic Energy:
Is when an object is moving with a mass and velocity

m = Mass of Object
v = Velocity of Object

Potential Energy:
Is when an object has some energy because of where it is like, being high up.
This can be set equal to kinetic energy to see what velocity an object will have in the air.

m = Mass of Object
g = 9.8m/s^2
h = Height that object is dropped from

Potential Energy in a String:

k = Spring constant
x = displacement