Find the Speed of an Ocean Wave Whose Displacement Is $y = 3.7 \cos ( 2.2 x - 5.6 t )$

question 62

Multiple Choice

Find the speed of an ocean wave whose displacement is given by the equation $y = 3.7 \cos ( 2.2 x - 5.6 t )$ where x and y are in meters and t is in seconds.

• A) 2.5 m/s
• B) 1.9 m/s
• C) 3.5 m/s
• D) 4.5 m/s

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