Displacement from starting point of roller coaster
A roller-coaster car moves 215 ft horizontally and then rises 134 ft at an angle of 30° above the horizontal. It then travels 134 ft at an angle of 40° downward. What is its displacement from its starting point? Use graphical techniques.
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The force exerted by the wind on the sails of a sailboat is Fsail = 305 N north. The water exerts a force of Fkeel = 195 N east. If the boat (including its crew) has a mass of 275 kg, what are the magnitude and direction of its acceleration?
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How does the environment influence the body plans of an organism?
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