Throw at a track-and-field event

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In the javelin throw at a track-and-field event, the javelin is launched at a speed of 28 m/s at anangle of 32° above the horizontal. As the javelin travels upward, its velocity points above the horizontal at an angle that decreases as time passes. How much time is required for the angleto be reduced from 32° at launch to 22°?

Reference no: EM13558749

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