A ball is thrown from the roof of a building whose height is h = 10m with initial velocity V0 = 10m / s. If the acceleration due to gravity is 10m / s², the angle formed between the direction of the ball's throw and the horizontal direction is 30 ° and the friction of the ball with air is negligible. Determine: -the time it takes for the ball to hit the ground
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the Doppler effect
it is the change in frequency or wavelength of a wave for an observer moving relative to its source
Answer:
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Explanation: