Quiz 2_2015-2016_Summer - Solution.pdf

# Quiz 2_2015-2016_Summer - Solution.pdf - CVEN1300...

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CVEN1300 Engineering Mechanics for Civil Engineers Quiz 2 Time allowed: 50 minutes Exam condition: Closed Book Name:________________________________________________ Student ID :____________________ Question 3: (30 marks) The speed of the 17.5-kN sports car is plotted over the 30-s time period as shown. 1) Calculate the acceleration of the car when t=5 s and t=20 s , respectively. 2) Plot the variation of the traction force F (force-time graph) needed to cause the motion.

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Question 2: (30 marks) The 12-kg block A is moving downward with a speed of 2 m/s. The mass of block B is 4 kg and the coefficient of kinetic friction between it and the horizontal plane is
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