Q. 20

A particle is pro

Answer :

u = Velocity of projection

Ɵ = Angle of Projection


= Initial velocity along x axis


= Initial velocity along y axis


= Acceleration along x axis


= Acceleration along y axis


Using equations of motion:




At any instantaneous time, ‘t’ the angle that v makes with the horizontal is.


So, …3


Given that v makes angle 90° with u,




…4


Now,


So,





…5


Now,



(From 5) …6


Similarly,


(From 5)



…7


Now, ..8


(Putting 6,7 in 8)



…9


Putting 5 in 9, we get:




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