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An elevator is going up vertically with constant acceleration of 2m/s 2 .At the instant when its velocity is 4 m/s a ball is projected from the floor of the elevator with a speed of 4 m/s relative to the floor with an angular elevation of 60°.Find the time taken by the ball to return to the floor.


 An elevator is going up vertically with constant acceleration of 2m/s2.At the instant when its velocity is 4 m/s a ball is projected from the floor of the elevator with a speed of 4 m/s relative to the floor with an angular elevation of 60°.Find the time taken by the ball to return to the floor.


Grade:10

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