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Q. A bomb is dropped by fighter plane flying horizontally. To an observer sitting in the plane, the trajectory of the bomb is a :

JEE MainJEE Main 2021Motion in a Plane

Solution:

image
$v _{ B }= u _{0} \hat{ i }- g t \hat{ j }$
$\vec{ v }_{ B / P }=\vec{ V }_{ B }-\vec{ v }_{ P }$
$\vec{ v }_{ B / P }=-8 t\hat{ j }$
straight line vertically down