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A 1450 kg car begins sliding down a 12.0 ° inclined road with a speed of...

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Physics

A 1450 kg car begins sliding down a 12.0 ° inclined road with aspeed of 34.0 km/h.The engine is turned off, and the only forcesacting on the car are a net frictional force from the road and thegravitational force. After the car has traveled 45.0 m along theroad, its speed is 50.0 km/h. (a) How much is themechanical energy of the car reduced because of the net frictionalforce? (b) What is the magnitude of that netfrictional force?

Answer & Explanation Solved by verified expert
4.4 Ratings (753 Votes)
Given m 1450 kg 12 v1 34 kmh 944 ms d 45 m v2 50kmh 1389 msSolution a Mechanical energy of the car reduced    See Answer
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