A 20 kg sphere with a radius of 4 m slides down a ramp as shown. Find the velocity at the bottom of the ramp using Newton's 2nd Law. M = 20 kg R = 4 m 10 m 0 = 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!