what do you think you know about physics, physics is the study of matter under the effect of energy, but does this includes solid states bodies, atoms at ground states, object at microscopic size or object moving faster than light? these and more is what prompt me to ask again what is physics?
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when the speed of a moving car is doubled, how much more kinetic energy does it have?
a) trippled b)doubled c) remain the same d) none of the above
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