3. Vector A has magnitude 13, and is at an angle of 112.6° from the +x axis. What is the x component of A? A) -5 B) -12 С) +13 D) +5 E) +12

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!