a) Find the resultant force and calculate its magnitude and direction (relative to the positive x-axis) (b) This resultant force now acts on an object (modelled as a particle) of mass 12kg. Find the acceleration and calculate its magnitude.

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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!