Andy and bob are carrying chuck on a 6.50 meter long uniform horizontal plank which weights 250 N. Chuck weighs 900 n and sits 2.5 meters from Bob. Calculate the magnitude and direction of the : a. force that bob exerts  b. force that andy exerts

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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!