When an automobile travels uphill or down hill on a highway, it experiences a force...
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When an automobile travels uphill or down hill on a highway, it experiences a force due to gravity. This force in pounds is called grade resistance and is modeled by the following equation, where ? is the grade and W is the weight of the automobile.F = W sin ?A 3340 lb car traveling downhill has a grade resistance of -230 lb. What is the angle of the grade?0=_____________
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