A 0.750 m string is used to whirl a 0.20 kg stone in a horizontal circle. If 15 circles are completed in a minute, determine the following: a. angular speed, b. linear speed, c. centripetal acceleration, d. centripetal force, e. tension in the string

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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!