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# A bomb is released by a horizontal flying aeroplane. What is the trajectory of the bomb?A.ParabolaB.Straight lineC.CircleD.Hyperbola

Last updated date: 17th Sep 2024
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Hint: An object in rest in a moving object tends to keep the motion if the object is separated during the motion due to the Inertia of motion. Also, any object is subject to gravitational force and thus accelerates vertically downwards, given that it is at a height above the surface.

Let us consider ‘u’ as the horizontal velocity in which the aeroplane is moving with the bomb. At the instant of releasing the bomb from the plane, by virtue of its motion, the bomb also possesses the initial velocity ‘u’.

Now, as we know the cause of the motion of the bomb was the motion of aeroplane which is no longer holding it. At the time of release the bomb moves in the horizontal direction (with zero vertical velocity) as that of the plane. Eventually, it loses its ability to move forward as there exists no cause for horizontal motion. But, according to Newton’s first law of motion – Everybody tends to be in its state of rest or uniform motion unless it is experienced by an external force. So, there should be an external force which causes the bomb to lose its horizontal velocity and it is the frictional force caused by the air. The vertical gravitational force which was not affecting the bomb while in the aeroplane becomes the strong force on it now. As a result, the bomb starts to acquire vertical acceleration (with zero horizontal velocity).
From our observations we can conclude that the bomb when released continues its horizontal velocity for sometimes, then gets vertically accelerated due to gravitational force. We can say that the bomb traces a parabolic path.

The answer is given by option A.