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A lift of very broad - floor is moving v...

A lift of very broad - floor is moving vertically upward with a constant retardation equal to 'g'. At an instant a stone is projected from a point on the floor of the lift at angle of elevation 0. Then the trajectory of the stone is:

A

A parabola in the lift-frame

B

A straight line in the lift-frame

C

A parabola in the ground frame

D

A straight line in the ground frame

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The correct Answer is:
B, C
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