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A dolphin leaps out of the water at an angle of 42.2 degree above the horizontal....

A dolphin leaps out of the water at an angle of 42.2 degree above the horizontal. The horizontal component of the dolphin's velocity is 8.40m/s. Find the magnitude of the vertical component of the velocity.
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The angle 0-42.20 Let the velocity be u,then its horizontal component velocity is ucos0-8.4m/s 8.4 cos42.2 0.7408 8.4 The vel

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