When a body is projected with a certain angle from the ground it returns with the same angle and speed with which it was projected. What if the the body was projected from some height, maybe a building. Will it still reach the ground with same speed and angle?
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1 Answer
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No, because once the particle goes below the level of projection, the speed increases, due to conservation of energy. Also the angle of flight, given by $\tan\phi=\frac{\dot{y}}{\dot{x}}$, increases because $\dot{y}$ increases while $\dot{x}$ remains constant.
