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To give a 19-kg child a ride, two teenagers pull on a 3.7-kg sled with ropes as indicated in Figure 5-35. Both teenagers pull with a force of 55 N at an angle of 35° relative to the forward direction, which is the direction of motion. In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find the acceleration of the sled and child.
Figure 5-35 Problem 31
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