Work and Energy m V1² + ΣFdx = 1/m V2² B The train shown is traveling at a speed of 45 miles/hour when the brakes are applied on the given cars causing it to stop. Given: friction coefficients of us = 0.40 and uk = 0.30,with the weight of each of the car being: Wa = 100 kips, Wb= 70 kips, and Wc = 80 kips, Matching: find the distance (ft) to stop for the given scenario Train does not slide. Brakes are applied on car B, and not on cars A or C. Train slides to a stop. Brakes are applied on car A, and not on cars B or C. Train slides. Brakes are applied on cars A&B, and not on car C. Train slides. Brakes are applied on car C, and not on cars A or B. 1. 331.57 2. 427.115 3. 563.665 4. 603.93 5. 704.581 6. 756.24 7. 805.46

1: Determine the magnitude of F, and length y if F;=1500 N and x =1.75 m. You may assume that the tension in a rope on one side of a pulley is equal to the tension in the rope on the other side of the pulley. In making this assumption, you are neglecting the effects of friction. 2m

5a. If lengths a=1.2m, b=3.7m, c=1.6m, d=4, e=1.4m, and f=4.3m, determine the angle (in degree) between the forces F_A and F_B. Answer must include 1 place after the decimal point. 5b. If lengths a=1.1m, b=4.8m, c=1.1m, d=3.2, e=1.3m, and f=3.2, determine the moment (in N*m) caused by force F_A about axis OD. Answer must include 1 place after the decimal point. Negative sign must be included if the rotational tendenct about the OD axis (from O to D) is clockwise. 5c. Find out all support reaction components at the fixed support O after being given all forces and lengths. ( use the 2nd image  named practice problem 5-2 for this question)