My 100 followers question

Two small stones A,BA ,B of masses 1 kg1~kg and 2 kg2~kg respectively, are projected simultaneously at t=0t=0. The stone AA is projected horizontally with speed Va ms1V_a~ms^{-1} from the top of a tower that is YY meters high and the stone BB is projected from the ground at a distance XX meters from the foot of the tower with speed Vb = 90 ms1V_b~=~90~ms^{-1} at an angle of 37o37^o with the horizontal as shown in the figure. At time t = 6 sect~=~6~sec after projection, they collide in air and at that moment their velocities are mutually perpendicular. Then find X + Y + VaX~+~Y~+~V_a

Note: give the sum of the numerical values of X,Y,VaX, Y , V_a.

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