To give a 19-kg child a ride, two teenagers pull on a 3.8-kg sled with ropes, as indicated in the figure . 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
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