The diagram shows a transverse wave at a particular instant. The wave is traveline to the right. The frequency of the wave is 12.5 Hz. distance At the instant shown the displacement is zero at point 'P'. What is shortest time to elapse before the displacement is zero at point 'Q'? A0.01 s B) 0.08 s C) 0.03 s D) 0.10 s

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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!