An object with a mass of 2 kg slides as shown below. The object has an initial velocity of 1 m/s and after descending the plane it increases to 3 m/s. If the kinetic frictional force on an inclined plane is 8 N, what is the difference in height of between the two places? +– 1 m's 3 m/s 30

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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!