A well-known example of the Conservation of Energy.
If you had a bowling ball up to your face and you let it go. Would you be brave enough not to step away? It wouldn't matter you have physics on your side! So how does it work?
The amount of energy in the bowling ball is constant unless you transfer it into another form of energy. The bowling ball has a certain amount of gravitational potential energy to begin with,but if you push the bowling ball away, it swings like a pendulum. The gravitational potential energy is transferred into kinetic energy, but when the bowling ball swings back towards you, it will never reach the same place because you have transferred some energy into wasted energy, in this is example this is is wasted as sound and heat energy because whenever there is kinetic energy there is always heat energy. The heavier the object or the longer the lever to further away the object will return to because you transfer more energy into other forms.
The amount of energy in the bowling ball is constant unless you transfer it into another form of energy. The bowling ball has a certain amount of gravitational potential energy to begin with,but if you push the bowling ball away, it swings like a pendulum. The gravitational potential energy is transferred into kinetic energy, but when the bowling ball swings back towards you, it will never reach the same place because you have transferred some energy into wasted energy, in this is example this is is wasted as sound and heat energy because whenever there is kinetic energy there is always heat energy. The heavier the object or the longer the lever to further away the object will return to because you transfer more energy into other forms.