Initially at time t 0 a particle is moving vertically at 4, Ask an Expert

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Initially (at time t = 0) a particle is moving vertically at 4 m/s and horizontally at 0 m/s. Its horizontal acceleration is 1.2 m/s2 . At what time will the particle be traveling at 43^o with respect to the horizontal? The acceleration due to gravity is 9.8 m/s² .

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