A force of 50 N acts to the right on a box and a force of 20 N acts to the left on the box. The net force acting on the box is _. 0 N 20 N 30 N 50 N 70 N

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Q: picture

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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!