6. A 1.5-N force is applied to a 1.0 kg book in order to move it across a desk at constant velocity Consider frictional forces. Neglect air resistance. Diagram the forces acting on the book. Y- Direction X- Direction FBD Hr: Name: I Fntal y %3D Ftal x %3D

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A: distance of border = 285 miles speed (v) = 189 miles per hour θ = 20.5o west of north

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.