Answer to Question #69386 in Mechanics | Relativity for sas

Question

In the javelin throw at a track-and-field event, the javelin is launched at a speed of 33.0 m/s at an angle of 34.0 ° 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 angle to be reduced from 34.0 ° at launch to 10.5 °?