The system consists of 70-lb and 15-lb blocks A and B, respectively, and 5-lb pulleys C and D that can be treated as thin disks. Assume that the cord does not slip on the pulleys, and neglect the mass of the cord (Figure 1) Figure <1of1 058 0358 Review ▾ Part A Determine the speed of block A after block B has risen 5 ft, starting from rest Express your answer to three significant figures and include the appropriate units. 4 ? "A" Value Units Submit Request Answer Next > Provide Feedback

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Equations of Dependent Motion: Rectangular Coordinates Learning Goal: The blocks A and B shown are initially at rest and have masses of mA = 225 kg and mp 117 kg Neglect the mass of the rope and pulley system and assume block B moves only in the vertical direction, parallel to the y-axis. Neglect the effects of friction. (Figure 1) Figure C 99°F Sunny B 1 of 1 ‒‒ Part A - Acceleration of Block B If the blocks are released from rest, determine the magnitude of the acceleration of block B Express your answer to three significant figures and include the appropriate units. ►View Available Hint(s) aB = Submit Value Part B Acceleration of Block A QA 5 a Value If the blocks are released from rest, determine the magnitude of the acceleration of block A. Express your answer to three significant figures and include the appropriate units. View Available Hint(s) i Units Units ? ?

The 2.5-Mg van is traveling with a speed of 137 km/h when the brakes are applied and all four wheels lock. (Figure 1) Part A If the speed decreases to 54 km/h in 5 s, determine the coefficient of kinetic friction between the tires and the road. Figure < 1 of 1 Express your answer using three significant figures. Vo AEo| It vec Pk =

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