#1
alright i had a lab where i dropped four diffent balls from different heights and calculated the bounce, kinetic energy, and potential energy.

The question is:
Was the kinetic and potential energy was conserved throughout the experiment, and if so where did the energy go.
#2
Gravitational potential energy was transferred into kinetic energey, thus conserved. When it hit the ground, some of it will have been lost as sound/friction, and some conserved as it bounced. You can calculate the amount lost and conserved somehow, but unless you're more specific I'm uncertain how.
#4
The gravitational potential energy becomes kinetic energy as the ball descends.

When the ball ascends, kinetic energy is becoming gravitational potential energy.


Obviously there'll be a bit of sound and heat given off too.

The balls eventually come to rest on a surface, so neither GPE or KE have been conserved. Energy as a whole has been conserved ["it cannot be made or destroyed"], given off as heat and sound energy.


I feel like I'm missing something here, but that's the general gist.


EDIT: Oh, wait.

Do you not carry on until the ball stops?
Co-President of UG's Tubgirl Virgins Club