Math mini-contest problem for Day 15 on D.Buzz 😎

Math problem for Day 15 on D.Buzz 😎

@jancharlest threw a frisbee with initial velocity of 15 meters per second from mountaintop 3 kilometers high from sea level, 30Β° from horizontal. Assuming no air resistance and obstacles, after how much time will the frisbee be at sea level?

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3 Comments
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