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Chapter 6: Q74PP (page 1253)
In the alternate universe, how fast must an object be moving for it to have a kinetic energy equal to its rest mass?
(a) 225m/s; (b) 260m/s; (c) 300m/s; (d) The kinetic energycould not be equal to the rest mass
The speed of the object is 260m/s .
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What do you think would be different in everyday life if the speed of light were 10 m/s instead of
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