1. Two boys are pulling a girl along on a toboggan. Each boy pulls on a rope attached to the same point on the front of the toboggan with a force of 360 N. Using a scale diagram, determine the resultant of the two forces exerted by the boys if their ropes form each of these angles with each other: (a) 0° (b) 60° (c) 120° (d) 180°

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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!