A girl drops an apple from the window of a tr | vedclass

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(D) When the apple is released,it is in a non-inertial frame of reference (the accelerating train).In this frame,the apple experiences two constant ac

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an inclined straight line pointing opposite to the direction of the moving train

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(D) When the apple is released,it is in a non-inertial frame of reference (the accelerating train).In this frame,the apple experiences two constant accelerations:$1$. The acceleration due to gravity,$a_2 = g$ (acting downwards).$2$. $A$ pseudo-acceleration,$a_1 = -a$ (acting opposite to the direction of the train's acceleration,where $a$ is the train's acceleration).Since both accelerations are constant and act in fixed directions,the net acceleration $a_{	ext{net}} = \sqrt{a_1^2 + a_2^2}$ is also constant in both magnitude and direction.Because the initial velocity of the apple relative to the girl is zero,the apple will move in a straight line along the direction of the net acceleration vector.Therefore,the trajectory of the falling apple as seen by the girl is an inclined straight line pointing opposite to the direction of the moving train.

$A$ girl drops an apple from the window of a train which is moving on a straight track with speed increasing at a constant rate. The trajectory of the falling apple as seen by the girl is

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