Seminar_5_solutions_revised - ENPH 131 Last Name First Name and Seminar 5 Dependent motion and relative motion Department of Physics Starting Feb 9 2015

# Seminar_5_solutions_revised - ENPH 131 Last Name First Name...

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Faculty of Engineering ENPH 131 Last Name: and Department of Physics Seminar 5 Dependent motion and relative motion Starting Feb 9, 2015 First Name: ID Number: Seminar Section: Please do all work on handout and box final numerical answers. Total=20 marks. 1.[7 points] Two cars are travelling on a highway interchange as shown. Car A is moving at 90 km/hr at the moment shown, at an angle of 45° with respect to the x-axis, while reducing its speed at a rate of 2.0 m/s2. The interchange at that location is circular, with radius of curvature 500 m. Car B is also moving at 90 km/hr, but at an angle of 30° with respect to the x- axis as shown; its speed is increasing at 3.0 m/s2 and the interchange at that location is circular with radius of curvature 100 m. Calculate the acceleration of car A with respect to car B. Express in terms of î and ĵ . 2 ) ĵ [ 0.5 ], ] (m/s