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OpenStudy (anonymous):
1-how many joules of kinetic energy does a 750 kg automobiletravelling at a typical highway speed of 65 mi/h have ? 2-and by what factor would its kinetic energy decrease if thecar traveled half fast? Express in 2 sig fig 3-and how fast (in mi/h) would the car have to travel to havehalf as much kinitic energy as in the first question?
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