Moe, Larry, and Curly push on a 752-kg boat that oats next to a dock. They each exert an 80.5-N force parallel to the dock. (a) What is the acceleration of the boat if they all push in the same direction? Give both direction and magnitude. (b) What are the magnitude and direction of the boat's acceleration if Larry and Curly push in the opposite direction to Moe's push? (c)If Moe, Larry, and Curly all push to the right with 85.0-N forces, and the boat accelerates at 0.530 m=s2 , what is its mass?

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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!