Ellie conducts an investigation to determine if size or weight affect how fast objects fall. Her investigation includes repeatedly dropping a basketball and a golf ball at the same time. After many trials, she determines that both balls land at the exact same time.
Why would Ellie's investigation be valid?
It is based on evidence.
It uses objects that move.
It proves her predictions are correct.
It includes her opinion.
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Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system
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Ellie conducts an investigation to determine if size or weight affect how fast objects fall. Her inv...
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