kg mass starts from rest at point A and moves along the x-axis subject to the potential energy shown in the figure below. PE 30 J E 25 J 20 J 15 J 10 J 5 J 2 m 4 m 6 m 8 m 10 m (a) Determine the speed (in m/s) of the mass at points B, C, D. (For each answer, enter a number.) 4.7 V m/s 3.6 X point B point C Is energy conserved? If so, how do you know it is conserved? How does the total energy at A compare to the total energy a 2.1 X point D Is enerm consenced? If so bow do vou know it is conserved? How does the total eneray at A compare to the total energy:

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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.