PHY 9A Study Guide - Quiz Guide: Net Force
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3 problems, 33 points each: (33 points) a 12 m wide river is owing at 0. 25 m/s. Two physicists can paddle a canoe with a speed of 1. 5 m/s relative to the water. It is placed at the base of a 30 ramp with vertical height h. the marble is observed to barely clear the top of the ramp. What is the maximum vertical height reached by the marble: (33 points) a 45 wedge of mass 2. 5 kg has a box of mass 0. 5 kg on its slope. The system is being pushed along a frictionless horizontal surface by a horizontal force of. 170 n. the wedge and the box are observed to be moving together. (a) draw a free-body diagram for the wedge, the box, and for the combined system consisting of the wedge and the box.
