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A 2,200-kg car is moving down a road with a slope (grade) of 14% at a...

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Physics

A 2,200-kg car is moving down a road with aslope (grade) of 14% at a constant speed of 11 m/s. What is thedirection and magnitude of the frictional force?
(define positive in the forward direction, i.e., down theslope)?

A 2,282-kg car is moving up a road with a slope(grade) of 10% at a constant speed of 12 m/s. What is the directionand magnitude of the frictional force?
(define positive in the forward direction, i.e., up the slope)?

Answer & Explanation Solved by verified expert
3.7 Ratings (655 Votes)
Free body diagram is made and the sum of force are made in thedirection of interest ie the x axisThe assumption that the car is rising as shown in the diagramof free body    See Answer
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