9. Work & Energy

Intro to Energy & Kinetic Energy

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Which of the following best defines $mechanical energy$ ?
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Which of the following is the best estimate for Arizona's average continuous power consumption (in $W$ ) over one year?
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Which term describes the energy an object possesses due to its motion?
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Which two main forms of mechanical energy are commonly identified in physics?
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Which of the following variables directly determine the amount of kinetic energy an object has according to the formula $K = \frac{1}{2} m v^{2}$ ?
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Which of the following best describes $kinetic energy$ ?
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When an object is in motion, what type of energy does it possess?
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Block A has mass $20 kg$ and block B has mass $50 kg$ . Starting from rest, the two blocks are pushed by identical forces through a distance of $10 m$ . Which block (if either) is going faster at end of the $10 m$ ? Which block (if either) has the greatest kinetic energy at the end of the $10 m$ ?
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Which branch of physical science is most concerned with studying nonliving matter and $energy$ ?
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If you know the velocity at the top of a vertical circle, how can you find the velocity at the bottom of the vertical circle?
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How are $K$ (kinetic energy) and $U$ (potential energy) different?
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In the context of simple machines, how can a machine multiply force without increasing the total work done?
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Which of the following lists the three main factors that determine an object's mechanical energy?
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If a moving car experiences an increase in $k i n e t i c e n e r g y$ , which of the following must be true?
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Which of the following statements about kinetic energy is incorrect?
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