** Easy Points: Need help with basic Physics & Science True/False Questions Please?

Describe each of the following statements as being either true or false. (If it is false, rewrite the statement to make it true).





1) No work ever needed to be done to give something potential energy





2) A ball falls, bounces several times, and stops. Its original energy disappeared.





3) An experiment result must be made to fit a theory





4) Experimental designs are guided by working hypotheses.


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Thanks for all your help!** Easy Points: Need help with basic Physics %26amp; Science True/False Questions Please?
1 false, if you want to raise a ball 10 feet up, it costs energy and therefor work





2. false, the potential energy of the ball has been transfered into heat and distortion of the floor





3. false, you can always find something new, so the theory should be adjusted to the results ;)





4. true** Easy Points: Need help with basic Physics %26amp; Science True/False Questions Please?
1) to have potential energy it has to be above ground level and because the gravity pulls everything tro the ground you need a force to pull it off the ground and when you have force you have ditsance and thus you have work(Work=Force x Distance





2) Well its potetential energy is gone but the balls energy itself is still there (E=mc^2)





i dont know about the rest

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